Rates of evolution of hybrid inviability in birds and mammals.

Abstract excerpt

Almost 30 years ago, A. C. Wilson and colleagues presented results indicating that hybrid inviability between species evolves 10 times faster in mammals than in birds and frogs. Here I revisit this question for birds and mammals using modern molecular data (mitochondrial cytochrome b DNA) and a more phylogenetically appropriate statistical approach. My analyses confirm that diverging mammals lose the ability to...

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