The times have changed from the initial estimates, but it is starting to
look like the population that became the Neandertals and Denisovans in
Europe and Asia left Africa half a million years ago, maybe out to
800,000. The human population in Africa has fluctuated over the last
150,000 years in some large swings as the ice age was ending, though the
glacial maximum was only 25,000 years ago. For some reason we had a
major population bottle neck around 80,000 years ago. The Neandertal
genomes show evidence that their population was also affected and
crashed around the same time. For some reason the other apes were not
as affected and managed to maintain larger effective population sizes
and so chimps have around 3 times the genetic variation found among the
modern humans.
Around 60,000 years ago there was a wave of migration out of Africa, so
there was around 20,000 years for our population in Africa to recover
before the migration out of Africa, but only a fraction of the
population left Africa, so there was a loss of variation among the
migrants that left Africa, and Africans show a greater genetic
diversity. Neandertals and Denisovans likely outnumbered the migrants,
but that doesn't seem to have mattered and though we coexisted with
Neandertal for another 25,000 years there seems to have been minimal
interbreeding. We have identified three instances that they are calling
pulses of Neandertal genetics into modern humans. The modern humans
that made it out to Indonesia seem to have encountered some Denisovans
and interbred with them, but again the mix is highly one sided and only
a few percent Denisovan DNA has been retained by some populations.
What it looks like is that Neandertals and Denisovans existed as smaller
groups than modern humans. The individuals that we have sequenced are
more inbred than most modern humans are. Though we might have been
inbreeding to the same extent in Ice Age Europe and Asia. Beats me how
large a population could be maintained in any given area during that
time period.
>
>
>> So pretty soon we will have 10,000 vertebrate genomes and like the
>> giraffe and okapi genome sequences there will be much more for
>> creationists to deny. Whole genome sequences demonstrating the
>> evolution of vertebrates. We also will have more invertebrate genome
>> sequences and plant genome sequences. An associate just told me that
>> there are a couple thousand Salmonella and E. coli genome sequences in
>> the database. Those are just two related types of bacteria. Denton has
>> already given up and just claims that everything unfolded as planned
>> after the initial creation. For the rest it is just different degrees
>> of denial.
>
>
> My impression is ID supporters have been running on nothing but
> willful stupidity fumes for decades, as recently illustrated by Axe's
> book. There is no logical path from an observation that human design
> involves intelligence, to a conclusion that non-human design must also
> involve intelligence.
None of the ID perps have had anything worth talking about since they
started running the bait and switch on their own creationist support
base in 2002. IC and Specified complexity predated the bait and switch
and only the new IDiot law of thermodynamics seems to have been put up
since, and everyone should know how well that turned out. You might
count CSI, but that is just restating Dembski's older specified
complexity junk. No one ever got the promised ID science when they
needed it, and that is apparent to anyone with a brain by this point in
time. It has already been more than 3 years since the last bait and
switch had to go down on both Texas and Louisiana IDiots that wanted to
teach IDiocy in their public schools. It is hard to believe that there
were still IDiots stupid enough to try back in 2013. The bait and
switch had already been going down for over a decade by that time. In 6
more months it will be 15 years since the ID perps decided to start
running the bait and switch instead of putting up any ID science. No
creationists have ever gotten the ID science all they get is an
obfuscation scam that doesn't even mention that ID ever existed.
My guess is that no one expects IDiocy to amount to anything at this
point in time. The IDiot science society (ISCID) closed their doors and
quit the ID scam 8 years ago. Just that fact should be enough for anyone.
Ron Okimoto