Question

The migration of gene into a population from other population by interbreeding is called as
A. Gene pool
B. Gene flow
C. Genetic drift
D. Gene erosion

Answer 1

Hint: The word migration refers to the movement of an individual or anything. The migration of genes means to transfer or move genes from one organism to another organism of the same population or of different population. Interbreeding refers to the breeding of an organism of the same species.

Complete answer: Gene flow is known as gene migration or allele flow. Gene flow is a concept of the genetic population which defines gene flow as the migration of genes into a population from another population by interbreeding. Two populations will have equivalent allele frequencies if the rate of gene flow is high enough and thus can be considered a single effective population.
a) Gene pool can be defined as a set of all genetic information or genes in any population usually belonging to a particular species. Extensive genetic diversity is indicated by gene pool which is related to strong populations that can survive intensive activities of intense selection.
b) Change in the frequency of an existing gene variant in a population due to random sampling of an organism is called genetic drift. Gene variants can be completely disappeared by genetic drift and reduce genetic variation.
c) The word erosion means depletion. A process in which the limited set of genes of an endangered species erodes even more when the individuals die off before reproducing in their endangered low population is called gene erosion.
So, option B is the correct answer.

Note: Various factors affect the rates of gene flow between different populations. Gene flow is expected to be less in species with low dispersal or mobility. The rate of dispersal is dependent on the mobility rate of individuals.