There is no real reasons for humans to choose to breed with
chimps. Furthermore, these days science is more progressive to
trying to use genetics to only take the genes from a species which
has a specific trait we want.
Eg, we could get the genes from dogs that makes their hearing
and sense of smell so much greater than human beings and use
genetic modification to 'create' human beings with such triats.
There is no reason to ever totally breed a human being with an
animal for whatever reason at this age of science where they are
into the process of decoding the genetic code and understanding
which genes are the once that produce the different traits,
abilities etc.
Correct, there's no real reason for the modern humans to breed
with modern chimps and apes.What i am referring to an earlier point
of our evolutionary history where the difference may be as slight
as a black woman breeding with a chinese man.
If humans had stayed isolated for another hundred thousand or
million years, it may be quite likely that the Inuit people would
not be able to produce a viable offspring with say the Australian
Aboriginal.
We are already doing that with gene modified food but the
greatest worry has always been what happens when something that is
gene modified managed to breed with something in the wild to
produce something totally unexpected and grosteque.
We may be able to obtain the dog's keen sense of smell and
hearing but there's no telling whether the offspring would look
more like a dog or a human or whether the child could grow insane
or feral by the imput of foreign sensory data its brain did not
evolved to handle.
The problem with genetic modifications is that there is a lot of
background programs running behind our DNA, we do not know whether
by attempting to insert new programs would you corrupt the existing
programs or totally compromise the entire system.
That said however, the current human form is extremely weak and
fragile, both mentally, physically and biologically. It's difficult
to imagine us being able to progress any furthur with modifying
ourselves.
