WASHINGTON (AP) - Researchers say the chromosome that makes a
man male is evolving faster than the rest of the genetic instruction book.
Women may not buy that. But a new study says it's true. Scientists found a big 30 percent difference in the Y chromosomes of male chimps and men, suggesting dramatic evolution in comparison to the full human genome.
Lead study author Karen Hughes offers some words of caution, however: Just because the Y chromosome is rapidly evolving doesn't
necessarily mean men themselves are more evolved.
The results are in a study appearing online Wednesday in the journal Nature.
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