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प्रश्न
Name the basic that cause variation among organisms.
अति संक्षिप्त उत्तर
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उत्तर
Mutations; recombination through independent assortment, crossing over, and random fertilisation; gene migration; genetic drift; and natural selection. Environmental conditions also cause non-heritable phenotypic differences.
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पाठ 9: Theory of Evolution and Evolution of Man - EXERCISES [पृष्ठ ५२६]
