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Johanna Villa
Biology
27 January, 21:47
What are the 2 ways variation occurs
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Krish Beard
27 January, 22:06
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2 ways variation is given below.
Explanation:
Genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring). A further source of variation is migration into a population from other populations with different gene frequencies ... The change in gene frequency is proportional to the difference in frequency between the recipient population and the average of the donor populations.
Genetic variation is an important force in evolution as it allows natural selection to increase or decrease frequency of alleles already in the population. Genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring). Genetic variation is advantageous to a population because it enables some individuals to adapt to the environment while maintaining the survival of the population.
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