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प्रश्न
Which of the following normally occurs in most species?
विकल्प
Gene migration
Mutation
Genetic drift
All of these
MCQ
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उत्तर
All of these
Explanation:
Gene migration (gene flow), mutation, and genetic drift all normally occur in most species and contribute to genetic variation and evolution. Mutation introduces new genetic variation, gene flow moves alleles between populations, and genetic drift causes random changes in allele frequencies, especially in small populations. All these processes operate simultaneously in natural populations.
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