Gene flow and Genetic drift.

Question

Distinguish between the following

Gene flow and Genetic drift.

Answer 1

Gene flow	Genetic drift
1. Gene flow is the alteration in the gene frequency due to migrations.	1. Genetic drift is alteration in the gene frequency by pure chance.
2. Gene flow occurs due to exchange of genes in the adjacent populations through interbreeding.	2. Genetic drift occurs due to accidental and sudden elimination of a particular gene.
3. Larger populations tend to show more migrations and hence more gene flow.	3. Smaller populations have greater chances of genetic drift.
4. Gene flow occurs due to emigration and immigration.	4. Genetic drift occurs only within the specified population.