Question

Bottleneck events are always caused by the death of most of a species’ population.


Please select the best answer from the choices provided

T
F

Answer 1

F

A population bottleneck is a sharp reduction in genetic diversity because the population size falls very low. That can result from mass deaths (natural disasters, disease, hunting), but it can also occur when only a few individuals become separated or found a new population (founder effect) rather than most of the species dying.