H. Allen Orr (born 1960) is the Shirley Cox Kearns Professor of Biology at the University of Rochester.
[5] His book Speciation,[6] co-authored with Jerry Coyne, was hailed in Science as "exceedingly well-written and persuasive".
They present evidence for the primacy of natural and sexual selection over genetic drift in driving speciation.
They also present evidence for the congruence of the Dobzhansky-Muller model for the evolution of postzygotic isolation with the genetics of hybrid incompatibilities in many natural systems.
Orr is widely published in some of the leading scientific journals including Nature, Science and PNAS.