User:Carla R2D2/Genetic variation
From Wikipedia, the free encyclopedia
Genetic variation is the difference in DNA among individuals [1] or the differences between populations[2]. There are multiple sources that gives maintenance in populations, which are mutation and genetic recombination.[3] Inside these sources there are others that contribute to genetic variation, like sexual reproduction and genetic drift.[2] Additionally, genetic variation has different forms according to the size and type of the small set of genomic variants. [4]
Without genetic variation, some of the three primary basic sources of mechanisms and evolutionary change cannot operate[5]. This is why individuals of one generation are qualitatively different from one another and in Darwin's theory it explains how the mechanism of evolution begins with the variation that exists among organisms within a species. [6]