Mammal hybridization potentialities....

A new paper in The American Naturalist should interest some in these parts, Placental Invasiveness Mediates the Evolution of Hybrid Inviability in Mammals:

...Here, we show that the maximum genetic distance at which interspecific mammalian pregnancies yield viable neonates is significantly greater in clades with invasive (hemochorial) placentation than in clades with noninvasive (epitheliochorial or endotheliochorial) placentation. Moreover, sister species with invasive placentation exhibit higher allopatry in their geographic ranges, suggesting that formerly separated populations in mammals with this placental type fuse more readily on recontact.

Here is a high resolution phylogram of mammalian lineages showing those with invasive placentation as solid. Hominidae are invasive.

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If you really think about it, fetuses are parasites: A host is invaded, blood flow is altered, hormones are introduced to prevent miscarriage, and the host's (a.k.a. mother's) immune system needs to be depressed to prevent rejection.
Not to harp on Uncommon Descent today, but their seeming inability to see words that they don't like gives the appearance of no reading comprehension skills whatsoever.
Ancient and continuing Darwinian selection on insulin-like growth factor II in placental fishes:
There was a time when the publication of the entire sequence of a genome--any genome--

do you think this finding provides a level of support for the recent paaper on human -chimp hybridization?

no, because it seems totally probable and likely that pre-chimps and pre-humans were interfertile 5 million years BP. i point to this paper to show that in fact hominidae are possibly more liable to hybridization than many other mammal taxa. (please note that john hawks as criticized the methods and conclusions of that paper you refer to, and i lean in his direction)