breeders do something like this with horses and donkeys... mules are
produced, but they are sterile... unable to reproduce.
i've not read in this area, but it seems logical that it's because there's
just too much genetic difference in the sperm and egg DNA to facilitate the
all the necessary energy transformations that yield a complete organism (one
that can reproduce, and everything else).
BTW, 'speciation' (the branching off of new species) does happen in a way
exactly analogous to your original example... but the DNA of the two
progenitors involved has to be much more similar than is that of dog and
cat.
ken collins
BlaDe wrote in message <7nvcsd$rev at dfw-ixnews11.ix.netcom.com>...
>Why cant you mix a dogs eggs and a cats sperm to get a wierd type of
animal?
>Same things with humans. Does the sperm die immediatley when hitting the
>egg? Something must be happening.
>>>
