[skushch]

The actual article http://www.pubmedcentral.nih.gov/articlerender.fcgi?tool=pub...

Greater population = greater opportunity for mutation. Sounds right...

[tokenadult]

Thanks for posting the link to the published study, as I was about to. I see both the study and the submitted news article about it are more than two years old.

After edit: Here is a link to a more recent article on a closely related subject:

http://pritch.bsd.uchicago.edu/publications/pdfs/CoopEtAl09....