You may be correct in that they are not comparable since the American Indians mated only with themselves and finches mated with different subspecies from the beginning.
-_- you entirely missed my point; 10,000 years isn't long enough for a species that produces a new generation roughly every 20 years to diverge into subspecies. If human races were different subspecies, we wouldn't be able to donate organs between races very much. Yet, we do.
But since they call them species, I am sure that's what you meant, even if the scientific definition tells you if they mate....
I told you before: if the finches interbreed only very infrequently, or if the hybrid offspring have a reduced chance of mating in the future, the different species remain distinct as the hybridization has only a very limited impact on the gene pools of the different species. It's a matter of gene pool influence. Species are more complicated than just what can interbreed to produce fertile offspring.
But then I've already found you have a problem in following scientific definitions.
It's really arrogant of you to say that, considering my degree is in biology, which is why I know more about how species are classified than the simplified high school definition you insist on using.
And yet those that are called separate species are more mixed genetically than those they call the same species.... Imagine that.
I want a source for that claim.
Just like the finch DNA was so mixed they couldn't even distinguish between the claimed species genetically?
I want a source for that too.
Yet humans with greater differences are the same species.
-_- the differences of human races are: skin color, frequency of certain genetic diseases... and not much else. While certain facial structures are more common among some groups, they aren't exclusive to any of them.
differences between the finch species: food source, physical capabilities (some can smash hard seeds with their thick beaks and others have beaks too small to do so), and feather coloration.
-_- also, a reminder that what humans CHOOSE to eat and what humans CAN eat are two different things and that, aside from individual allergies, all humans can eat the same things. Those finches, not so much.
This is the part where you start the double talk to get around the fact that humans with greater genetic differences are the same species and finches with so small a difference they couldn't distinguish between them are separate species, right?
Once you get a source that claims those finch species are more genetically similar to each other than human populations are with each other, then I will address this point. It better not be Answers in Genesis.
