Question

How does genetic drift affect a population?

Answer 1

Genetic drift:

1. The casual changes or fluctuations in the number of genetic variants in a population is referred to as genetic drift.
2. It occurs when the variant forms of alleles increase or decrease at random by chance over time.
3. Genetic drift reduces variation to a great extent by causing some gene variants to vanish totally.
4. Genetic drift is affected by certain changes in nature and among the population such as immigration or emigration of individuals.
5. The impact of genetic drift is mostly evident in small populations.