Speed Limit To The Pace Of Evolution, Biologists Say
Monday, November 2, 2009 - 20:14
in Biology & Nature
A major conclusion of the work is that for some organisms, possibly including humans, continued evolution will not translate into ever-increasing fitness. Moreover, a population may accrue mutations at a constant rate --- a pattern long considered the hallmark of "neutral" or non-Darwinian evolution --- even when the mutations experience Darwinian selection.