
From ScienceDaily:
Despite a well-documented history of dramatic genetic decay, the human Y chromosome has over the course of millions of years of evolution managed to preserve a small set of genes that has ensured not only its own survival but also the survival of men. Moreover, the vast majority of these tenacious genes appear to have little if any role in sex determination or sperm production.
Taken together, these remarkable findings — published this week in the journal Nature — suggest that because these Y-linked genes are active across the body, they may actually be contributing to differences in disease susceptibility and severity observed between men and women.
“This paper tells us that not only is the Y chromosome here to stay, but that we need to take it seriously, and not just in the reproductive tract,” says Whitehead Institute Director David Page, whose lab conducted the research with collaborators from Washington University in St. Louis and Baylor College of Medicine. More.
Also:
“Evolution is telling us these genes are really important for survival,” adds Winston Bellott, a research scientist in the Page lab and lead author of the Nature paper. “They’ve been selected and purified over time.”
Good thing evolution tells things to Winston Bellott. We thought it just whistled while it worked.
The Y chromosome had been reprieved earlier from its status as a vestige about to disappear, but this is newish.
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Usual bumf:
Interesting video. Only 27 genes on the Y chromosome and it only takes 1 to make an embryo a male. It would be fascinating to understand just how it did that.
Does the Y chromosome have any junk DNA? Does the X chromosome have any junk DNA?
Quotes of note from the article:
Reminds of this article from a few years back:
Here are few more notes from a few years back:
The evolutionary scientists of the preceding paper offered some evolutionary ‘just so’ stories of ‘dramatically sped up evolution’ for why there are such significant differences in the Y chromosomes of chimps and humans, yet when the Y chromosome is looked at for its rate of change we find there is hardly any evidence for any change at all, much less the massive changes the evolutionists are required to explain.
Of related interest: Man’s sexual reproduction relies on ‘hydraulics’ whereas chimpanzees have an actual bone involved in their reproductive system:
One of the most enigmatic ‘novelties’ of the Cambrian explosion was the appearance of unique sexual reproduction for a wide variety of different phyla:
Moreover, its been known for quite a while, as Walter Remine relates in this following interview, that sexual reproduction severely limits genetic variability rather than enhances it as Darwinists had originally thought.
Y chromosome – Wikipedia
from the study:
Loosing 581 genes from 600 down to 19, and then 25 million years of stasis! Now that’s really evolving! Makes you wonder if the human Y started with just 19 in the first place, doesn’t it?
Junk DNA issues?
http://www.biosciencetechnolog.....8;type=cta