LIFE SCIENCE

Detailed explanation-1: -The flow of individuals in and out of a population introduces new alleles and increases genetic variation within that population. Mutations are changes to an organism’s DNA that create diversity within a population by introducing new alleles.

Detailed explanation-2: -Genetic variations can arise from gene variants (also called mutations) or from a normal process in which genetic material is rearranged as a cell is getting ready to divide (known as genetic recombination). Genetic variations that alter gene activity or protein function can introduce different traits in an organism.

Detailed explanation-3: -Effect of mutation on the gene pool of populations: Mutations are likely to either introduce new alleles with new traits or remove alleles thus eliminating a number of traits, resulting in increase or decrease of gene pool in a population.

Detailed explanation-4: -Gene duplication, mutation, or other processes can produce new genes and alleles and increase genetic variation. New genetic variation can be created within generations in a population, so a population with rapid reproduction rates will probably have high genetic variation.

Detailed explanation-5: -Changes of a Gene Pool The factors that may lead to a change of a gene pool include; Mutation-This refers to a permanent change of genes leading to variation within a population. Mutation can either be random or caused by physical or chemical factors. These factors are known as mutagens.