Write a note on “Genetic drift”.

1.	Write a note on “Genetic drift”.
Answer» 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.

Answer»

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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