LIFE SCIENCE

Detailed explanation-1: -Evolution by gene flow (migration) makes two different populations more similar to each other. Two different populations are often subject to different selective pressures and genetic drift, so they would be expected to have different allele frequencies.

Detailed explanation-2: -Gene flow involves the movement of genes into or out of a population, due to either the movement of individual organisms or their gametes (eggs and sperm, e.g., through pollen dispersal by a plant).

Detailed explanation-3: -There are four key mechanisms that allow a population, a group of interacting organisms of a single species, to exhibit a change in allele frequency from one generation to the next. These are evolution by: mutation, genetic drift, natural selection, and gene flow.

Detailed explanation-4: -gene flow, also called gene migration, the introduction of genetic material (by interbreeding) from one population of a species to another, thereby changing the composition of the gene pool of the receiving population.

Detailed explanation-5: -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.