Question

A drastic short-term reduction of population size caused by natural disasters, disease, or predators is called: A.gene flow

B.founder effect C.microevolution D.bottleneck effect

Answer 1

D- bottleneck effect
the population decreases so drastically that there isn't really any new genetic variation within the population, and soon the population decreases until there are no more individuals left, or they manage to recover, relocate, etc.