NEET BIOLOGY

Detailed explanation-1: -Genetic variation is defined as the presence of a various number of alleles with different distribution frequencies in a certain population. Genetic variation simply refers to the variation of genomes at the individual level (i.e., between individuals) or at the species level (i.e. between species populations).

Detailed explanation-2: -A change in the frequency of an allele in a population due to random sampling of organisms is called genetic drift or allelic drift. A gene pool is defined as the set of all genes of a particular species. The transfer of alleles or genes from one population to another is called gene flow or gene migration.

Detailed explanation-3: -Mutation Generates New Alleles Mutation creates slightly different versions of the same genes, called alleles. These small differences in DNA sequence make every individual unique. They account for the variation we see in human hair color, skin color, height, shape, behavior, and susceptibility to disease.

Detailed explanation-4: -Genetic variation describes naturally occurring genetic differences among individuals of the same species.