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Although some folks have been complaining that it’s hard to find a good man these days, that is not
because males are becoming biologically extinct.
In fact, Danielle Wiener-Bronner of The Wire writes that Men Are Here to Stay, Thanks
to the Y Chromosome’s
Indestructible Genes.
It is the Y chromosome that signals the human fetus to grow male sex organs rather than default to the female ones.
Because the Y chromosome has lost a great deal of its genes over (lots of) time, and
was “significantly shorter” than the X chromosome to
begin with, some (alarmists, no doubt) worried that this was the beginning of a world without men.
Not to worry… A
recent study indicates that the “Schwarzeneggers” of this planet will be around for quite a while longer. It now seems that in the past 25 million years, the Y chromosome has virtually quit shedding its genes.
Resources
http://www.thewire.com/national/2014/04/y-chromosome-men-genes-nature/361151/
Copyright April 27, 2014 by Linda Van Slyke All Rights Reserved
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