Article
A localized negative genetic correlation constrains microevolution of coat color in wild sheep.
Science (New York, N.Y.) - 18 Jan 2008
Gratten J, Wilson A J, McRae A F, Beraldi D, Visscher P M, Pemberton J M, Slate J
Abstract excerpt
The evolutionary changes that occur over a small number of generations in natural populations often run counter to what is expected on the basis of the heritability of traits and the selective forces acting upon them. In Soay sheep, dark coat color is associated with large size, which is heritable and positively correlated with fitness, yet the frequency of dark sheep has decreased. This unexpected...
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