/sci/ - Science & Math

>>14820470
The basis is called seas, mountain ranges and deserts, and populations moving around them having a restricted gene flow with each other.

>>12668796
>scientifically species classification is by successful breeding.
That's a lie.

>>12066165
Another example that I know of would be crows. Carrion crows and hooded crows have been accepted as different species even though they overlap and naturally and regularily hybridize.