Question

write a note on " genetic drift "

Answer 1

Genetic drift is the change in the frequency of existing gene variant in a population due to random sampling organisms.The alleles in the offsprings are sample of those in the parent and chance as a role in determining whether the given individual survives and reproduce.

Answer 2

i. Any alteration in allele frequency in the natural population by pure chance is called genetic drift.

ii. For example, elimination of a particular allele from a population due to events like accidental death prior to mating of an organism.

iii. Genetic drift occurs when the sole possessor of a particular allele is removed from the population.

iv. It is also called Sewall Wright effect.

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