Men Aren’t Going Extinct, Study of Shrinking Y Chromosome Finds

Wednesday, 22 Feb 2012 07:55 PM

 

Share:
  Comment  |
   Contact Us  |
  Print  
|  A   A  
  Copy Shortlink

Feb. 23 (Bloomberg) -- Men aren’t going extinct, scientists assured the world yesterday.

The Y chromosome, the strand of DNA that determines male sex, contained about 800 genes some 200 million years ago. Now, though, it has only 30, leading some scientists to conclude it could disappear altogether, bringing about the end of men.

That’s probably not the case, said Jennifer Hughes, a researcher with the Whitehead Institute for Biomedical Research, in Cambridge, Massachusetts. The number of genes on the chromosome have been stable for at least the past 25 million years, she and her colleagues found in a study reported in the journal Nature.

“Although the Y chromosome did suffer quite a bit over the course of evolution, it seems like what remains of it is not going anywhere,” Hughes said in a telephone interview. “The genes that remain on it have critical biological functions, and that means they are going to survive.”

Hughes and colleagues compared chromosomes of humans to a Rhesus monkey, a species that split from human ancestors 25 million years ago, and that of chimpanzees, which separated 6 million years ago.

The data led them to conclude that the Y chromosome decays quickly at first, then stabilizes and keeps genes important to continuing its existence, she said.

--Editors: Reg Gale, Angela Zimm

To contact the reporter on this story: Ryan Flinn in San Francisco at rflinn@bloomberg.net

To contact the editor responsible for this story: Reg Gale at rgale5@bloomberg.net

© Copyright 2014 Bloomberg News. All rights reserved.

Share:
  Comment  |
   Contact Us  |
  Print  
  Copy Shortlink
Around the Web
Join the Newsmax Community
Please review Community Guidelines before posting a comment.
>> Register to share your comments with the community.
>> Login if you are already a member.
blog comments powered by Disqus
 
Email:
Country
Zip Code:
Privacy: We never share your email.
 
Hot Topics
Follow Newsmax
Like us
on Facebook
Follow us
on Twitter
Add us
on Google Plus
Around the Web
Top Stories
You May Also Like

China Launches Experimental Moon Orbiter

Friday, 24 Oct 2014 06:41 AM

China launched an experimental spacecraft on Friday to fly around the moon and back to Earth in preparation for the coun . . .

Australian Doctors Transplant 'dead' Hearts in Surgical Breakthrough

Friday, 24 Oct 2014 06:40 AM

Australian surgeons said Friday they have used hearts which had stopped beating in successful transplants, in what they  . . .

Former Rep. Walker: Climate Change More Politics Than Science

Thursday, 23 Oct 2014 15:42 PM

The issue of man-made climate change has become more of a political matter than a scientific one, former Pennsylvania Re . . .

Most Commented

Newsmax, Moneynews, Newsmax Health, and Independent. American. are registered trademarks of Newsmax Media, Inc. Newsmax TV, and Newsmax World are trademarks of Newsmax Media, Inc.

 
NEWSMAX.COM
America's News Page
©  Newsmax Media, Inc.
All Rights Reserved