Question

which form of reproductive isolation could not be overcome by in vitro fertilization?
○ ecological isolation
○ mechanical isolation
○ gametic isolation
○ behavioral isolation

Explanation:

Ecological, mechanical, and behavioral isolation prevent gametes from meeting but not their compatibility. In vitro fertilization (IVF) bypasses these by combining gametes directly. Gametic isolation occurs when gametes (sperm and egg) are incompatible at the molecular level, so even direct combination in IVF fails. Thus, gametic isolation cannot be overcome by IVF.

Answer:

gametic isolation