Thought this was interesting though not technical. The latter part discusses humans with chimps.

 

 

http://www.cbc.ca/news/viewpoint/vp_strauss/20060606.html

 

"Which brings me to the humanzees. What would we do if one of them happened to come into being now? There have been attempts to create them, including astounding research in the 1920s in which Soviet biologist Ilya Ivanovich Ivanov first tried to impregnate chimpanzees with human sperm.

 

He then artificially implanted orangutan sperm into women volunteers. His cross-breeding didn't produce any hybrids, but what if?"

 

It's probably good that it wasn't sucessful as the moral issues would be staggering.

This has already been extensively addressed in a thread in the Bioethics forum, which I'm too lazy to actually search out.

 

Mokele