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Give any ‘two’ factors responsible for genetic variation. - Biology

Give any ‘two’ factors responsible for genetic variation.

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Gene mutations, gene flow, genetic recombination, genetic drift and chromosomal aberration are some factors responsible for genetic variation.
 Gene mutations: These involve changes in the chemical constitution of a gene. They introduce variations in the gene pool and are responsible for the change in the gene frequency.
 Genetic recombination: Organisms reproducing sexually undergo gametogenesis during which the homologous chromosomes exchange genetic material by the process of crossing over. This produces new combinations of genes resulting in genetic variation.

Concept: Gene Flow and Genetic Drift
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