If gene migration happens multiple times, it would lead to
Mutation
Gene flow
Chemical evolution
Genetic drift
Genetic drift causes the change in gene frequency by chance in a small population.
Genetic drift operates in
Variation in gene frequencies within populations can occur by chance rather than by natural selection. This is referred to as
A gene locus has two alleles $A,$ a. If the frequency of dominant allele $A$ is $0.4$ then what will be the frequency of homozygous dominant, heterozygous and homozygous recessive individuals in the population?
Genetic variation in a population arises due to
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