What effect does increasing gene flow between two population

What effect does increasing gene flow between two populations have on their genetic makeup?

Solution

Answer:

The alleles of all genes in a biological population are known as “gene pool.” The term pool represents the collection of gametes (two gametes from one offspring) of all offspring within the population. Alleles move between individuals and populations during the process of mating and migration. This allele movement underlies gene flow in evolution. When two populations are maintained with increased gene flow may lead to combination of “two gene pools” result in “lowering of genetic variation by repairing them” between two populations finally \"speciation\" is the effect can be observed. However, major population similarity can be observed with gradual homogenization of genetic pools & sometimes, interbreeding may resulted

According to the Hardy–Weinberg equilibrium in large populations, usually allele frequencies are stable and constant unless there is gene flow or genetic drift either by immigration of species with different genotypic features or by mutation or by selection. Gene flow and genetic drift may produce evolutionary changes. In finite populations, new allele gain will be very less even from random sampling; sometimes-random sampling may result in the disappearance of the existing genes either by replacement or by removal. Genetic drift improves genetic uniformity in a population