In population genetics, gene flow (also known as gene migration or allele flow) is the transfer of genetic variation from one population to another. If the rate of gene flow is high enough, then two populations are considered to have equivalent allele frequencies and therefore effectively be a single population. Gene flow is also called gene migration. Gene flow is the transfer of genetic material from one population to another. Gene flow can take place between two populations of the same species through migration, and is mediated by reproduction and vertical gene transfer from parent to offspring.
In population genetics, the gene flow (also known as gene migration or allele flow) is the transfer of genetic variation from one population to another. If the gene flow rate is high enough, then two populations are considered equal allele frequencies and therefore only one population. It has been shown that "only one migrant per generation" is required to prevent diverging from populations. Gene flow is an important mechanism for transferring genetic diversity between populations. Migrants change the distribution of genetic variants within populations by changing the frequency of alleles (a gene carrying a proportion of members). The higher the rates of gene flow, the higher the homogeneity between the two groups. For this reason,