Only an occasional instance of interbreeding can probably keep the two whale population sufficiently similar to remain the same specie. This is especially true if the difference in behavior between the whale populations are learned, not instinctive.
This brings up the following question: if two populations are genetically sufficiently similar such that it they were to interbreed, they would produce fertile offsprings. But the groups have different genetically driven behavior such that in real life, they never really actually mate. Are they already two species or not?
This brings up the following question: if two populations are genetically sufficiently similar such that it they were to interbreed, they would produce fertile offsprings. But the groups have different genetically driven behavior such that in real life, they never really actually mate. Are they already two species or not?
