Can O and AB Blood Types make O baby?
Elaine Mandeville
Can a parent with an O blood type and one with AB blood type have a
child with O blood type? Thanks. And what about the negative positive
part? The O is positive, not sure about the AB. Thanks.
JRG
If one parent is AB and the other is O, the baby will be either A or B
(AO or BO). Those are the only combinations. I can't answer the pos or
negative question.
JRG
Robert A. Neinast
In article <33B7B6...@mail.dec.com>,
Elaine Mandeville <mande...@mail.dec.com> says:
> Can a parent with an O blood type and one with AB blood type have a
> child with O blood type? Thanks.
No. The child should be either A or B.
> And what about the negative positive
> part? The O is positive, not sure about the AB. Thanks.
Rh negative is a standard recessive, so it is possible for
two positives (phenotype) to have a negative. The only thing
mandantory is for two negative parents to have a negative child.
Regards,
Bob
--
". . . and shun the frumious Bandersnatch."
Robert Neinast (nei...@lucent.com)
Pickerington, OH
Mark Meyer
Yes. I believe a child of an AB parent can have _any_ type.
--
Mark Meyer Net: mme...@dseg.ti.com
Texas Instruments, Inc. Plano, TX ICBM: 33d3'55"N 96d41'41"W
My opinions. Mine! How many times do I gotta explain it?
We are Chuckie of Borg. We don't think resistance is such a good idea.
D. C. Sessions
Mark Meyer wrote:
>
> In article <33B7B6...@mail.dec.com>, Elaine Mandeville
> <mande...@mail.dec.com> wrote:
> > Can a parent with an O blood type and one with AB blood type have a
> > child with O blood type? Thanks. ...
>
> Yes. I believe a child of an AB parent can have _any_ type.
Backwards -- an O parent can have either A (genotype AO)
or B (genotype BO) children. No way AB, though, since
that requires a B gene from one parent and an A gene from
the other -- no room for the O phenotype.
--
D. C. & M. V. Sessions
sess...@primenet.com
http://www.primenet.com/~sessions under construction
Betsy Schwartz
Blood type is interesting - Instead of just dominant and recessive, the
blood type gene has THREE flavors, A, B, and O. A and B are "codominant"
over O. Each person gets one gene from each parent so the possible
permutations are AA or AO for type A, BB or BO for type B,
AB for type AB, and OO for type O.
I don't think an AB parent and an O parent can have an O child
There's a nice picture up at:
http://raven.umnh.utah.edu/review/blood/types.html
and a slightly dryer explanation at
http://www.transweb.org/faq/faq_abo_alleles.html
--
bet...@shore.net http://www.shore.net/~betsys
bet...@cs.umb.edu http://www.cs.umb.edu/~betsys
If this looks funny I'm typing with the baby on my lap!
D. C. Sessions
sec at nbnet dot nb dot ca wrote:
>
> On Mon, 30 Jun 1997 11:57:59 -0700, JRG <gard...@nytimes.com> wrote:
>
> >Elaine Mandeville wrote:
> >>
> >> Can a parent with an O blood type and one with AB blood type have a
> >> part? The O is positive, not sure about the AB. Thanks.
No telling on the Rh factor. The O could be ++, in which case the
child would be phenotype Rh+; the AB could be anything. That means
that the AB *could* pass an Rh- while the O+ passed another, net
result Rh-. Alternately either or both could pass an Rh+, result
Rh+.
> >If one parent is AB and the other is O, the baby will be either A or B
> >(AO or BO). Those are the only combinations.
>
> And where did you study biology?
Possibly (and it's possible that we're mistaken) somewhere
that they correctly teach that blood type is dictated by
either, both, or neither of two antigens: the A and B
antigens. When neither are present the phenotype is
O (genotype OO); when the gene for the A antigen is present
the phenotype is either A (genotype AA or AO) or AB
(genotype AB); and when the B gene is present the phenotype
is either B (genotype BO or BB) or AB. A parent with
phenotype AB can pass either A or B to offspring;
a parent with phenotype O can only pass O to offspring;
so their children will be genotype AO (phenotype A)
or BO (phenotype B).
Lwcollier
You wrote:
>Can a parent with an O blood type and one with AB blood type have a
>child with O blood type? Thanks. And what about the negative positive
>part? The O is positive, not sure about the AB. Thanks.
Yes, these parents can have children with type O, AB, A, or B blood. I'm
not sure about the negative-positive part, as to which is dominant or if
two positive parents can only have positive children.
Lisa
sec at nbnet dot nb dot ca
On Mon, 30 Jun 1997 11:57:59 -0700, JRG <gard...@nytimes.com> wrote:
>Elaine Mandeville wrote:
>>
>> Can a parent with an O blood type and one with AB blood type have a
>> child with O blood type? Thanks. And what about the negative positive
>> part? The O is positive, not sure about the AB. Thanks.
>
>
>If one parent is AB and the other is O, the baby will be either A or B
>(AO or BO). Those are the only combinations.
And where did you study biology?
s...@nbnet.nb.ca
http://personal.nbnet.nb.ca/sec/
'He will wipe away all tears from their eyes.'
- Rev 21:4
Maria Garcia Pastor
I am very curious. Why do you ask such question?
maria
JRG
sec at nbnet dot nb dot ca wrote:
>
> On Mon, 30 Jun 1997 11:57:59 -0700, JRG <gard...@nytimes.com> wrote:
>
> >Elaine Mandeville wrote:
> >>
> >> Can a parent with an O blood type and one with AB blood type have a
> >> child with O blood type? Thanks. And what about the negative positive
> >> part? The O is positive, not sure about the AB. Thanks.
> >
> >
> >If one parent is AB and the other is O, the baby will be either A or B
> >(AO or BO). Those are the only combinations.
>
> And where did you study biology?
Could you be more rude and sarcastic? Wait, don't answer that, I think
you can be. If I made a mistake, just be so kind and correct it. Your
superior attitude is unnecessary.
Many thanks.
JRG
Maria Garcia Pastor
I don't think you did, so I am awaiting an explanation myself :?
Maria
Lwcollier
I'm sorry, but I've just realized my previous posting on this topic was
incorrect. These two parents can either have children with type A or type
B blood, but not type O. That's because O is recessive to types A or B,
so the O parent will produce two O genes, while the other parent will
produce A and B genes. Putting them together makes either AO (which
results in a type A baby) or BO (which results in a type B baby).
Lisa
Miche
In article <ECnE3...@ebi.ac.uk>
pas...@venus.your.domain.here (Maria Garcia Pastor) writes:
> I am very curious. Why do you ask such question?
'Cause there's no such blood type as BO.
Miche
--------------------
Miche Campbell <*>
Captain of the Starship Yentaprise
Remove <no-ads.> in address before emailing me.
My opinions are mine alone, not those of the University of Otago
You say Chaos like it's a *bad* thing!
Aaron Eilers
Miche wrote:
>
> In article <ECnE3...@ebi.ac.uk>
> pas...@venus.your.domain.here (Maria Garcia Pastor) writes:
>
> > I am very curious. Why do you ask such question?
>
> 'Cause there's no such blood type as BO.
True, there is no BO blood type. However, I believe that the poster who
mentioned the BO blood type was actually referring to the genotype of
the individual in question. A person with a B allele and an O allele
(BO) would have type B blood.
Aaron
PoohDiddly
If the mother has negative, the baby has negative. If the mother has
positive, the baby has positive. The father has no effect on this part of
the blood type.
Robert A. Neinast
In article <19970703064...@ladder01.news.aol.com>,
This is simply wrong, and you should be much more concerned
about spreading such wrong information when it can upset
people.
First of all, the gene for Rh+ is a simple dominant over Rh-.
If the mother is Rh- (phenotype), that means her genotype must
be --. A father with a + phenotype could have ++ or +- (or -+)
genotype, so any child could get a + or - from the father,
and a - from the mother, which means an Rh- mother with an Rh+ father
can get either an Rh+ or Rh- child.
The whole point of Rhogam injections is to cover the case
when an Rh- mother has a Rh+ baby (from an Rh+ father). In that case,
the Rh- mother's body can (not always) develop antibodies against
the (foreign) Rh+ antigen, and attack and kill subsequent Rh+
babies.
Note that you are also incorrect in asserting that "If the mother has
positive, the baby has positive.". It is certainly possible
to have both parents be positive (+- genotypes) and to
have an Rh- baby (if it gets a - from each parent).
Maria Garcia Pastor
In article <5pd36u$c28$3...@celebrian.otago.ac.nz>, michelle...@no-ads.stonebow.otago.ac.nz (Miche) writes:
>In article <ECnE3...@ebi.ac.uk>
>pas...@venus.your.domain.here (Maria Garcia Pastor) writes:
>
>> I am very curious. Why do you ask such question?
>
>'Cause there's no such blood type as BO.
>
>Miche
>
>
>--------------------
>Miche Campbell <*>
>Captain of the Starship Yentaprise
>Remove <no-ads.> in address before emailing me.
>My opinions are mine alone, not those of the University of Otago
>You say Chaos like it's a *bad* thing!
>
Fron the point of view of the phenotypic characters there is not point in
talking about B0 type since that is B type
From a genotypic point of view, B0 in meaningfull.
And if you are the one that wrote such quetion, where did you study biology
then?
Let me tell you that you could not be more rude
maria
Bridgette and John Moore
PoohDiddly wrote:
>
> If the mother has negative, the baby has negative. If the mother has
> positive, the baby has positive. The father has no effect on this part of
> the blood type.
this is absolutely false!!!!!!
If one parent is negative it will depend on whether or not the other
parent has both alles for postive (In this case the child will be
postive) or whether they have one positive/one negative (in this case
there is a 50% chance for positive or negative).
If the orginal poster was correct why do
A) all of us Rh- women married to Rh+ men have to get Rhogam shots when
we are pregnant.
B) How come out of my three sisters and I, I am the only one who is Rh-.
Please be careful when giving information like this on the net.
bridge
D. C. Sessions
PoohDiddly wrote:
>
> If the mother has negative, the baby has negative. If the mother has
> positive, the baby has positive. The father has no effect on this part of
> the blood type.
Grossly (and dangerously) mistaken. Rh factor is
genetically determined in the usual fashion, with one
gene from each parent. Positive is dominant, so
a child with an Rh- mother and an Rh+ father can
(and often does) end up Rh+. This is dangerous,
because the mother can start producing antibodies
against the Rh antigen, and they cross the placenta
into the fetal bloodstream to destroy fetal blood.
To address the point in less theoretical terms: our
twins are Rh-, their sister is Rh+; same mother.
QED.
--
D. C. Sessions
dc.se...@tempe.vlsi.com
Christopher Biow
michelle...@no-ads.stonebow.otago.ac.nz (Miche) wrote:
>pas...@venus.your.domain.here (Maria Garcia Pastor) writes:
>>>so their children will be genotype AO (phenotype A)
>>>or BO (phenotype B).
>> I am very curious. Why do you ask such question?
>'Cause there's no such blood type as BO.
Be very careful with your terminology: "blood type" is imprecise, as it can
refer to phenotype or genotype. BO is not a blood phenotype, but it is most
certainly a genotype, which is exactly what DC said. Since the O is
recessive in the presence of the B, the phenotype tests as B.
weis...@nbnet.nb.ca
In article <19970703064...@ladder01.news.aol.com>,
poohd...@aol.com (PoohDiddly) wrote:
> If the mother has negative, the baby has negative. If the mother has
> positive, the baby has positive. The father has no effect on this part of
> the blood type.
This is inaccurate because Rh neg mothers can have Rh pos babies which is
why Rhneg moms need rhogam during pregnancy to prevent problems at birth.
Maureen
Susan Martin
: Can a parent with an O blood type and one with AB blood type have a
: child with O blood type? Thanks. And what about the negative positive
: part? The O is positive, not sure about the AB. Thanks.
A parent with O is O-O (both parents contributed O to the child).
A parent with AB is A-B (one A & one B)
Child of these two are: A0, A0, B0, or B0 -- therefore A or B, not O.
I forget how the positive/negative works. I believe that if you
are negative you have -/- but if you are positive you are either
+/- or +/+ so you have a 25% chance of a -/- child, 50% of a +/-,
and 25% chance of a +/+ child (i.e., 75% chance of +).
Susan (A+) married to John (O+) parents of Kaitlyn (O+) and Rowan (O+).
Miche
In article <19970702153...@ladder02.news.aol.com>
lwco...@aol.com (Lwcollier) writes:
> I'm sorry, but I've just realized my previous posting on this topic was
> incorrect.
So was mine.
> These two parents can either have children with type A or type
> B blood, but not type O. That's because O is recessive to types A or B,
> so the O parent will produce two O genes, while the other parent will
> produce A and B genes. Putting them together makes either AO (which
> results in a type A baby) or BO (which results in a type B baby).
I didn't realise there _was_ a type BO. (They didn't teach me that in
high school.) It took an email from someone who knew better to put me
straight, for which I'm grateful. I'm always happy to learn.
wal...@dnvn.com
In article <5pd36u$c28$3...@celebrian.otago.ac.nz>,
michelle...@no-ads.stonebow.otago.ac.nz (Miche) wrote:
> In article <ECnE3...@ebi.ac.uk>
> pas...@venus.your.domain.here (Maria Garcia Pastor) writes:
>
> > I am very curious. Why do you ask such question?
>
> 'Cause there's no such blood type as BO.
>
> Miche
>
Of course there is. There are genotypes of BB, BO, AA and AO. They
test as A and B of course, but we were discussing genetics here.
k
wal...@dnvn.com
> If the mother has negative, the baby has negative. If the mother has
> positive, the baby has positive. The father has no effect on this part of
> the blood type.
Not so. Negative is dominant; either parent can pass the gene for
this blood type. If your point were true there would never be a problem of
negative/positive incompatibility which only occurs when the Mom is
negative and the baby positive. In that case the Mom has passed her
positive gene rather than her negative dominant gene to her baby and
the father has also passed along a positive gene. A negative father
can give the baby his gene as well.
Karen and Mike
That can't be right because as a rh-negative mother, I was told that I
would have to have a post-partum Rhogam shot if the baby was
rh-positive. This prevents the mother from developing antibodies. I
also know that my sister's (also neg) baby was positive.
PoohDiddly wrote:
> If the mother has negative, the baby has negative. If the mother has
> positive, the baby has positive. The father has no effect on this part
> of
> the blood type.
--
_________________________________________________________
Karen Humphries and Mike Collins<karen.a...@internetMCI.com>
Parents to Marissa 8/94 and Matthew 10/96
ttfn
danny or doreen dong
wal...@dnvn.com wrote:
>In article <19970703064...@ladder01.news.aol.com>,
>poohd...@aol.com (PoohDiddly) wrote:
>> If the mother has negative, the baby has negative. If the mother has
>> positive, the baby has positive. The father has no effect on this part of
>> the blood type.
>Not so. Negative is dominant; either parent can pass the gene for
>this blood type. If your point were true there would never be a problem of
>negative/positive incompatibility which only occurs when the Mom is
>negative and the baby positive. In that case the Mom has passed her
>positive gene rather than her negative dominant gene to her baby and
>the father has also passed along a positive gene. A negative father
>can give the baby his gene as well.
Rh negative is a recessive trait . An Rh negative mother has two
copies of the negative gene. If the mother is Rh negative, them the
baby's Rh type will depend on which gene the father passes on . If he
is also negative, the baby will be negative . If he is positive, he
may have two copies of the positive gene, in which case the baby will
be positive. If the father has one copy of the positive gene, and one
of the negative, he will be positive and the baby's type will depend
on which gene is passed on.
Doreen
Shannon Mae Basu
Rh negative is not dominant! When you are Rh positive, it means you
have Rh factor in your blood. When you are negative, it means the Rh
factor is not present in your blood. The only way you are Rh negative
is when neither parent gives the child the gene for Rh positive.
Here's how it breaks down:
When both parents are homozygous for being Rh positive:
+ +
|-----|-----|
+| ++ | ++ |
-------------
+| ++ | ++ |
-------------
therefore the child has 100% chance of being Rh positive.
When one parent is homozygous for Rh positive and the other is
homozygous for Rh-
+ +
|-----|-----|
-| +- | +- |
-------------
-| +- | +- |
-------------
The child has 100% chance of being Rh positive.
When both parents are heterozygous for Rh positive:
+ -
|-----|-----|
+| ++ | +- |
-------------
-| +- | -- |
-------------
This means the child has 25% of being Rh neg, and 75% chance of being
Rh positive. The child can be Rh neg, even though neither parent is
Rh neg.
When both parents are Rh negative:
- -
|-----|-----|
-| -- | -- |
-------------
-| -- | -- |
-------------
There is 100% chance that the child will be Rh negative. There is 0%
chance that the child can have Rh positive blood.
When one parent is homozygous Rh neg and the ohter is heterozygous for
Rh+
+ -
|-----|-----|
-| +- | -- |
-------------
-| +- | -- |
-------------
There is a fifty percent chance the child will be Rh neg and a fifty
percent chance that the child will be Rh positive.
I have type O+ blood. The only thing I can know about my parents is
that neither could have type AB blood and that one must have Rh+.
blood.
An Rh negative mother who becomes pregnant with an Rh positive babies
could develop antibodies to Rh factor when exposed to the baby's blood
through the placenta or during delivery. If she develops antibodies,
any further pregnancies of Rh+ babies would be at extreme risk, since
her antibodies would attack the babies blood! That is why Rh negative
women whose husbands are Rh positive are given injections of RhoGam
during and after pregnancy.
On 3 Jul 1997 15:01:57 GMT, wal...@dnvn.com wrote:
>In article <19970703064...@ladder01.news.aol.com>,
>poohd...@aol.com (PoohDiddly) wrote:
>
>> If the mother has negative, the baby has negative. If the mother has
>> positive, the baby has positive. The father has no effect on this part of
>> the blood type.
>
>Not so. Negative is dominant; either parent can pass the gene for
>this blood type. If your point were true there would never be a problem of
>negative/positive incompatibility which only occurs when the Mom is
>negative and the baby positive. In that case the Mom has passed her
>positive gene rather than her negative dominant gene to her baby and
>the father has also passed along a positive gene. A negative father
>can give the baby his gene as well.
--
Shannon (mommy to Usha Tracey, 1-23-95 left-handed, brilliant, artistic child)
Shannon Mae Basu
Havertown, Pennsylvania
shan...@ix.netcom.com
http://www2.netcom.com/~shanbasu/new.html
Miche
In article <33BADE...@iscssun.uni.edu>
Aaron Eilers <eile...@iscssun.uni.edu> writes:
> Miche wrote:
> >
> > In article <ECnE3...@ebi.ac.uk>
> > pas...@venus.your.domain.here (Maria Garcia Pastor) writes:
> >
> > > I am very curious. Why do you ask such question?
> >
> > 'Cause there's no such blood type as BO.
>
> True, there is no BO blood type. However, I believe that the poster who
> mentioned the BO blood type was actually referring to the genotype of
> the individual in question. A person with a B allele and an O allele
> (BO) would have type B blood.
Thanks for the correction. I was also corrected in email.
Always happy to learn, though.
Sandro Haupt
In article <nuibu4n...@shell2.shore.net>,
Betsy Schwartz <bet...@shore.net> writes:
> Blood type is interesting - Instead of just dominant and recessive, the
> blood type gene has THREE flavors, A, B, and O. A and B are "codominant"
> over O. Each person gets one gene from each parent so the possible
> permutations are AA or AO for type A, BB or BO for type B,
> AB for type AB, and OO for type O.
>
> I don't think an AB parent and an O parent can have an O child
You can specify by your own explanation that an AB parent and an O parent can
*definitely* only have an A child or a B child (with the genetic permutations
AO or BO). Nothing else!
For eMail reply, please replace "nospam" with "unmp". Sorry about the
inconvenience.
Miche
In article <ECqnC...@ebi.ac.uk>
pas...@venus.your.domain.here (Maria Garcia Pastor) writes:
> In article <5pd36u$c28$3...@celebrian.otago.ac.nz>, michelle...@no-ads.stonebow.otago.ac.nz (Miche) writes:
> >In article <ECnE3...@ebi.ac.uk>
> >pas...@venus.your.domain.here (Maria Garcia Pastor) writes:
> >
> >> I am very curious. Why do you ask such question?
> >
> >'Cause there's no such blood type as BO.
> >
> >Miche
> >
> >
> >--------------------
> >Miche Campbell <*>
> >Captain of the Starship Yentaprise
> >Remove <no-ads.> in address before emailing me.
> >My opinions are mine alone, not those of the University of Otago
> >You say Chaos like it's a *bad* thing!
> >
>
> Fron the point of view of the phenotypic characters there is not point in
> talking about B0 type since that is B type
>
> From a genotypic point of view, B0 in meaningfull.
>
> And if you are the one that wrote such quetion, where did you study biology
> then?
NO I AM NOT, and you are not the first person to make that mistake.
The ONLY comments I have made to this thread are the one you quoted
above and one where I posted admitting I was wrong.
>
> Let me tell you that you could not be more rude
This is a case of mistaken identity. I _AM NOT_ the person you think I
am, and it would have served you well to check attributions before you
started calling me names! I admitted I was wrong; I'd like you to do
the same.
Betsy Schwartz
>You can specify by your own explanation that an AB parent and an O parent can
>*definitely* only have an A child or a B child (with the genetic permutations
>AO or BO). Nothing else!
The reason I qualified that statement is that I'm not an expert on
genetics.
I know there are sometimes rare cases where people end up with unusual
genetic makeup - girls with one X (Turner's Syndrome) or XXY boys, to name
two. Other changes happen through random mutations. Ordinarily it is only
possible for an AB-O couple to have an A or a B baby, but I don't know
anything about rare blood types or unusual mutations or anything of the
sort, so I hedged.
--
bet...@shore.net http://www.shore.net/~betsys
bet...@cs.umb.edu http://www.cs.umb.edu/~betsys
If this looks funny I'm typing with the baby on my lap!
Maria Garcia Pastor
In article <5ps9tj$29m$1...@celebrian.otago.ac.nz>, michelle...@no-ads.stonebow.otago.ac.nz (Miche) writes:
>NO I AM NOT, and you are not the first person to make that mistake.
>The ONLY comments I have made to this thread are the one you quoted
>above and one where I posted admitting I was wrong.
>>
>> Let me tell you that you could not be more rude
>
>This is a case of mistaken identity. I _AM NOT_ the person you think I
>am, and it would have served you well to check attributions before you
>started calling me names! I admitted I was wrong; I'd like you to do
>the same.
>
>Miche
>
>
>--------------------
>Miche Campbell <*>
>Captain of the Starship Yentaprise
>Remove <no-ads.> in address before emailing me.
>My opinions are mine alone, not those of the University of Otago
>You say Chaos like it's a *bad* thing!
>
I said "if you are the person that asked that above, let me tell you that
you could not be more rude", so if you were not I am calling you nothing,
anyway, I am sorry I said that to the wrong person and did not mean to offend
anybody (not even the original rude one)
Maria
sas...@browning.unx.sas.com
In article <19970703064...@ladder01.news.aol.com>, poohd...@aol.com (PoohDiddly) writes:
|> If the mother has negative, the baby has negative. If the mother has
|> positive, the baby has positive. The father has no effect on this part of
|> the blood type.
I was under the impression that I received a Rhogam shot because I
have O- blood and my husband has + blood, and if our baby were to have
positive blood like its daddy, my body could possibly kill it (my
antibodies would attack it).
So, now I am confused. Can someone explain to me about Rhogam--in
plain terms?
Thanks!
Hanna
mommy to Katie (6-4-94)
Baby 2 due Sept 30
Elizabeth Gardner
I think the explanation is that PoohDiddly knows Poohdiddly about Rh
factors--if what he or she said was true, there would be no such thing as
Rh disease, which is indeed what you received Rhogam in order to prevent.
Though as I understand it (not too well, since DH and I are both positive
and I therefore haven't studied up), the danger is not so much for the
first baby as for the second. If your first baby is positive, your body
makes antibodies that would then attack the second positive baby.
Maybe someone from the healthcare professions can jump in and elucidate further.
PSobrero57
I'm not a healthcare professional, either, but I did take a lot of
physical anthropology and biological science in college, and your
(egardner's) explanation fits what I was always taught regarding + and -
rh factors.
Jades Star
Rhogam is given to an Rh- mother for exactly the reason you said. If the
baby is possitive the mother's body could produce anti-bodies which would
attack the baby as though it were an invading foreign body.
It is not true that the baby and the mother have the same Rh factor
automatically. My mom was an A- and my dad an O+. I am an O+. When I
was pregnant my doctor told me that it is actually more common for the
baby to have the fathers blood type than the mothers.
Hope this helps.
Shannon F.
Jades St...@aol.com
Mommy to Victoria 9/27/96
Nothing in the world compares to looking into the face of your child and knowing that this is the best thing you have ever done.
BarbLuongo
>|> If the mother has negative, the baby has negative. If the mother has
>|> positive, the baby has positive. The father has no effect on this part
of
>|> the blood type.
>
>I was under the impression that I received a Rhogam shot because I
>have O- blood and my husband has + blood, and if our baby were to have
>positive blood like its daddy, my body could possibly kill it (my
>antibodies would attack it).
>So, now I am confused. Can someone explain to me about Rhogam--in
>plain terms?
My hubby is O+ and I am A+, when my daughter was born A-, I asked how
that could be. The doctor told me that all the "+" means is that there is
SOME Rhogam in my blood and Bill's, but could be just a little, just
enough to be positive. So two parents with + can have a - baby. In your
case, if you have a baby with + and don't know it, from what I have read,
it would/could cause harm to the _next_ baby, because your body would
attack it. (like antibodies.)
Please forgive me if I mistyped.
<---Barb--->
(barbl...@aol.com or ba...@voyager.net)
D R
A hush fell across the group when barbl...@aol.com (BarbLuongo)
proudly proclaimed:
>>|> If the mother has negative, the baby has negative. If the mother has
>>|> positive, the baby has positive. The father has no effect on this part
>of
>>|> the blood type.
HUH??!! Tell this to my mother who is negative and had two positive
babies, plus one negative (me). Also, I am negative (like I said) and
have a positive baby 4 years ago. If the above were true, there would
be no need for the Rhogam shots.
>>
>>I was under the impression that I received a Rhogam shot because I
>>have O- blood and my husband has + blood, and if our baby were to have
>>positive blood like its daddy, my body could possibly kill it (my
>>antibodies would attack it).
>>So, now I am confused. Can someone explain to me about Rhogam--in
>>plain terms?
>
The way I understand it is that the first baby is pretty safe. But
once you have a baby that is Rh positive (or a miscarriage or abortion
of an Rh positive fetus), then it is the next babies that are in
possible danger because you may have developed antibodies to the Rh
positive blood during the other pregnancy. The purpose of the Rhogam
shot is to prevent your body from developing these antibodies in the
first place. The antibodies from the Rhogam destroy any Rh positive
cells from the baby that have passed into the mother's circulation so
that the mother's immune system isn't primed to start producing her
own Rh antibodies.
If the women has Rh antibodies, and she is pregnant with an Rh
positive baby, the antibodies may cross the placenta in large numbers
and reach the baby's blood, where they will react with the baby's red
blood cells and destroy them. This can cause the baby to die.
I hope I have remembered this correctly, and that this clears things
up for you. When my mom had her second baby, who was the second
positive one, Rhogam wasn't around yet. There were no problems caused
from any possible antibodies that may have been produced after her
first one. But, I'd rather be safe than sorry, and I had the Rhogam
shot after my baby and hopefully I don't have any antibodies now.
>
>My hubby is O+ and I am A+, when my daughter was born A-, I asked how
>that could be. The doctor told me that all the "+" means is that there is
>SOME Rhogam in my blood and Bill's, but could be just a little, just
>enough to be positive. So two parents with + can have a - baby. In your
>case, if you have a baby with + and don't know it, from what I have read,
>it would/could cause harm to the _next_ baby, because your body would
>attack it. (like antibodies.)
>
>Please forgive me if I mistyped.
>
> <---Barb--->
> (barbl...@aol.com or ba...@voyager.net)
Diane (dia...@geocities.com remove the X to reply via e-mail)
"They say that children, now, they come in all ages
And maybe sometimes old men die with little boy faces"...
The Difference by The Wallflowers
Jean Healy
In article <19970715233...@ladder02.news.aol.com>,
barbl...@aol.com (BarbLuongo) wrote:
> >I was under the impression that I received a Rhogam shot because I
> >have O- blood and my husband has + blood, and if our baby were to have
> >positive blood like its daddy, my body could possibly kill it (my
> >antibodies would attack it).
>
> My hubby is O+ and I am A+, when my daughter was born A-, I asked how
> that could be. The doctor told me that all the "+" means is that there is
> SOME Rhogam in my blood and Bill's, but could be just a little, just
> enough to be positive. So two parents with + can have a - baby. In your
> case, if you have a baby with + and don't know it, from what I have read,
> it would/could cause harm to the _next_ baby, because your body would
> attack it. (like antibodies.)
This is more or less correct. Blood type is determined by several
different genes, including 1 which determines whether you have A, B, AB,
or O blood type, and 1 which determines whether your blood is Rh-positive
(+) or Rh-negative (-). As we probably all remember from high school
biology, each of us has 21 pairs of chromosomes (42 total) -- 1 chromosome
in each pair comes from the mother, and 1 comes from the father.
Consequently, we also have 2 copies of each gene -- again, 1 from mom, and
1 from dad.
There are 2 different versions, or alleles, of the gene for Rh factor: +
and -. Because each of us has 2 copies of the gene, we can end up with a
++, --, or +- genotype (which is just bio-speak for "the genes you have
for a particular trait.") Because the Rh+ allele is dominant over the Rh-
allele, someone with a +- genotype will have Rh+ blood. In other words,
anyone with Rh- blood *must* have a -- genotype, but someone with Rh+
blood may have either a ++ or +- genotype ... so just knowing that you're
Rh+ doesn't tell you what genes you have. In the original poster's case,
presumably she and her husband both had +- genotypes, which meant their
blood was Rh+ ... but each of them passed their - allele on to their
daughter, making her -- (which means she has Rh- blood). OTOH, a couple
who are both Rh- *must* both have -- genotypes, meaning they can't have an
Rh+ baby because neither of them has a + allele there to pass on.
As I understand the Rhogam shot issue, Rh+ blood contains certain proteins
that Rh- blood lacks. Therefore, you have Rh- blood, and your body
encounters these proteins, it recognizes them as foreign/ not belonging
there, and builds up antibodies to them. Makes sense most of the time,
because most of the foreign proteins the body encounters are germs or
other unwelcome stuff, which you *want* antibodies to dispose of ... but
obviously, you don't want your body to treat your unborn baby as a foreign
object. This usually isn't a concern with a first baby, as a child's
blood doesn't mix or come in contact with its mother's while the child's
in utero (blood doesn't pass back and forth through the placenta).
However, if Mom's Rh- and her baby's Rh+, the bleeding/ mixing of blood
that takes place during childbirth is enough to stimulate antibody
production. Not a problem for Baby #1, who's on his/her way out anyway
... but once the antibodies are there, they can cause the mother's body to
reject subsequent embryos/ babies if they have Rh+ blood (which means she
may conceive, but probably won't carry the babies to term). I believe the
Rhogam shot, which is given shortly after the birth of Baby #1 if the
mother is Rh-, prevents the formation of antibodies, and thus prevents
this problem from arising during subsequent pregnancies.
-Jean
(Rh- and oh-so-eagerly awaiting that Rhogam)
Jean Healy
In article <jh50-16079...@132.236.49.30>, jh...@NOSPAM.cornell.edu
(Jean Healy) wrote:
> (+) or Rh-negative (-). As we probably all remember from high school
> biology, each of us has 21 pairs of chromosomes (42 total) -- 1 chromosome
Forgive the brain fade -- I should've said 23 pairs, 46 total. My face is
doubly red as I've just had the bad manners to follow up my own post.
-JH
grandma Rosalie
egar...@mcs.net (Elizabeth Gardner) wrote:
>In article <EDBtJ...@unx.sas.com>, sas...@browning.unx.sas.com wrote:
>
>> In article <19970703064...@ladder01.news.aol.com>,
>poohd...@aol.com (PoohDiddly) writes:
>> |> If the mother has negative, the baby has negative. If the mother =
has
>> |> positive, the baby has positive. The father has no effect on this =
part of
>> |> the blood type.
This is wrong
>>=20
>> I was under the impression that I received a Rhogam shot because I
>> have O- blood and my husband has + blood, and if our baby were to have
>> positive blood like its daddy, my body could possibly kill it (my
>> antibodies would attack it). =20
>> So, now I am confused. Can someone explain to me about Rhogam--in
>> plain terms?
The negative Rh factor is recessive. So a negative Rh person has
two negative Rh genes. The positive Rh person can have two + or
they can have one + and one minus. Because Rh negative is
recessive, most people are Rh+.
If a + and a + have a baby, it will likely be a + (a minus is
possible tho if one grandparent on each side is negative, or a
few other scenarios. If a minus and a minus have a baby, it
will be minus.
An Rh+ mother with an Rh negative father (such as my mother and
father) will likely have no problem because the baby will likely
be positive. =20
The Rh factor problem comes when the mother is negative and the
father is positive. Now you will have a negative mother and the
baby will likely be positive. Each pregnancy, some small amount
of the baby's blood will get into the mother's blood stream, and
she will develop antibodies against the positive blood. They
used to think that the critical time was the third child, which
wouldn't survive.
I was in the hospital with my second baby with a lady who was Rh
negative, and was having her 3rd, and was overweight, and was
placenta previa. Her baby was fine. So it wasn't inevitable,
even in those days ('63)
Hope this helps..
grandma Rosalie
s...@email.unc.edu
>The Rh factor problem comes when the mother is negative and the
>father is positive. Now you will have a negative mother and the
>baby will likely be positive. Each pregnancy, some small amount
>of the baby's blood will get into the mother's blood stream, and
>she will develop antibodies against the positive blood. They
>used to think that the critical time was the third child, which
>wouldn't survive.
I am Rh Neg and my husband is Rh Pos. Our first child was Rh Neg and our
second was Rh Pos. So with the first child I had a rhogam shot during
pregnany, but not one after delivery; with the second child, I had a shot both
before and after delivery. -Suzi
grandma Rosalie
s...@email.unc.edu wrote:
>>The Rh factor problem comes when the mother is negative and the
>>father is positive. Now you will have a negative mother and the
>>baby will likely be positive. Each pregnancy, some small amount
>>of the baby's blood will get into the mother's blood stream, and
>>she will develop antibodies against the positive blood. They
>>used to think that the critical time was the third child, which
>>wouldn't survive.
>
>I am Rh Neg and my husband is Rh Pos. Our first child was Rh Neg and =
our=20
>second was Rh Pos. So with the first child I had a rhogam shot during=20
>pregnancy, but not one after delivery; with the second child, I had a =
shot both=20
>before and after delivery. -Suzi
So now you know that your husband is heterozygous for Rh - that
is he has one positive and one negative gene. The chances are
about 50/50 (I think - I'm not very good with odds) that your
babies will be + (as you can see, having had one of each).
>
>>I was in the hospital with my second baby with a lady who was Rh
>>negative, and was having her 3rd, and was overweight, and was
>>placenta previa. Her baby was fine. So it wasn't inevitable,
>>even in those days ('63)
>
>>Hope this helps..
>
>
>
>>grandma Rosalie
>
>
grandma Rosalie