Question

Define genetic drift.

Answer 1

Genetic drift:

1. The elimination of the genes of certain traits from a small population when a section of the species population dies of natural calamity or migrates to another region is called genetic drift.
2. It alters the gene frequency of the remaining population.
3. Genetic drift is caused by drastic changes in the frequencies of particular genes by chance alone.
4. The genetic drift will accumulate different variations in each of the two geographically separated subpopulations.