Primate hybridization

By Razib Khan | August 25, 2007 12:38 pm

p-ter points me to a new paper which documents interspecies hybridization in monkeys whose lineages putatively diverged about 3 million years ago. Note that the hybridization follows Haldane’s rule: the heterogametic sex (in mammals the males) exhibits sterility while the other sex does not. Whatever genetic incompatibilities built over the period during which the two populations became distinct the less robust sex (males have only one copy of the X chromosome, ergo, sex-linked diseases) naturally exhibits greater breakdown in hybrids. In any case, the story is obviously relevant to Neandertal introgression, since the divergence between moderns and Neandertals is on the order of 1 million to 100,000 years.
Related: Mammalian hybridization potentialities.


Comments (1)

  1. Colugo

    Gelada (Theropithecus) and Papio have also hybridized. Different genera, although they are both called baboons. In addition, Papio species arguably constitute a single superspecies.


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About Razib Khan

I have degrees in biology and biochemistry, a passion for genetics, history, and philosophy, and shrimp is my favorite food. In relation to nationality I'm a American Northwesterner, in politics I'm a reactionary, and as for religion I have none (I'm an atheist). If you want to know more, see the links at


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