Question

What is the major effect of genetic drift?

Answer 1

Genetic drift :

1. Genetic drift is a mechanism by which evolution develops over generations.
2. Genetic drift occurs due to changes in allele frequencies of a population that occurs by chance.

The major effect of genetic drift is the Bottleneck effect :

1. The phenomenon of reducing the size of a population is termed a bottleneck effect.
2. It 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.