送交者: Latino2 于 2005-2-05, 10:17:28:
回答: 请教诸位生物学大牛 由 疫苗 于 2005-2-05, 05:43:52:
There are many such cases in animal and plants.
It also depends on other criteria:
How far is the genetic distances between them?
Is there any gene flow between them?
Are their offsprings normal if they mate succesefully?