Allopatric Speciation Flow
Sympatric Speciation Flow
Key Distinction
| Feature | Allopatric | Sympatric |
|---|---|---|
| Geographic separation | Required | Not required |
| Primary mechanism | Physical barrier | Reproductive isolation (polyploidy, behaviour) |
| Common in | Animals | Plants (polyploidy) |
| Speed | Slow (thousands of generations) | Can be instantaneous (polyploidy) |