Is the Y and X Chromosomes the Premier Testing Grounds for Eukaryotic Cell Mutations
socrtwo
therefore the place where cells put their most experimental cutting
edge genes that it is trying out to see if they survive "natural",
predatory, sexual and self selections? Is the Y chromosome really
like a basic research laboratory in say a company? If the Y
chromosome survives the various kinds of selection does the cell
decide then that the mutation is OK to put "in beta testing". This
might mean then the cell moves the mutation over to the X chromosome
where it has no backup pair only 50% of the time, when there is a
male. In other words the cell is reasonably sure it's a good gene, and
it's safe to test it's viability in only half the cases of its
expression.
Maybe if cell survives the various selection pressures at that point,
the new gene get transferred to another more permanent location among
the chromosomes. Is there a hierarchy of stability of chromosomes,
with some chromosomes ranking much higher in "confidence" that the
cell has in them? With genes which the cell has higher confidence
maybe the cell expends the most energy in making sure these genes
remain undamaged literally copied between generations. Is this kind of
thing true for some locations and not others scattered across genes
rather than there be a hierarchy of confidence in whole genes?
The idea of some genes being held sacrosanct and faithfully copied
where others are allowed more to mutate, sounds a bit like what
happens in the entire organism itself. It tries very hard to make
sure the sexual cells are preserved and unmutated and at least tin
males, the sperm are sometimes held outside the body. Are the
organelles actually analogous to the testes? Do they perhaps contain
the real total blueprint of the cell and like the testes are separate
from the nuclear "body". Is there something analogous to the ovum
contained within the nucleus???