(February 13, 2015 at 1:04 pm)robvalue Wrote: If they can no longer interbreed, they are considered to have speciated.
Are you aware of the time scales were talking about here?
If two forms of human can no longer interbreed then you'd say they have speciated. If not, then they haven't yet. I'm no expert but that's the general gist.
Again, if you're expecting really quick speciation you will be disappointed. It typically takes a long time, though not always.
Exactly. Given enough time and genetic isolation, it is possible a new species would result. But, in the slave case, there was neither time nor genetic isolation.
