Question

What is an example of a bottleneck?

Answer 1

Genetic drift:

It is a mechanism by which evolution develops over generations due to change in allele frequencies of a population that occurs by chance.

Bottleneck effect:

1. The phenomenon of reducing the size of a population is termed a bottleneck effect.
2. It is an example of genetic drift which occurs due to catastrophic environmental events, hunting of particular species that are near to extinction, and destruction of habitat.
3. This reduces the size of the population very quickly and genetic variability also.

Example of a bottleneck :

1. The overhunting or killing of the elephant seal population is an example of a bottleneck.
2. This elephant population was hunted almost when it was going to extinct.