When Is Genetic Drift A Major Factor In Evolution? - Sawaal

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5 Q:

When is genetic drift a major factor in evolution?

A) When there is male competition B) When there is artificial selection
C) When there is no selective pressure D) When there is disruptiveselection
Answer: C) When there is no selective pressure Explanation:

Genetic drift or allelic drift is the change in the relative frequency in which a gene variant (allele) occurs in a population due to random sampling and chance.

When is genetic drift a major factor in evolution is

* When there is low gene flow.

* When there is no selective pressure.

* When there is a bottleneck.

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