Genetic drift is defined as the change in gene frequency that occurs by chance in a small population. It provides diversity to a population without any adaptations.
Random unidirectional change in allele frequencies that occurs by chance in all populations and especially in small populations is known as:
NEET UG 2013 — Zoology Evolution
2013mcqmedium
Random unidirectional change in allele frequencies that occurs by chance in all populations and especially in small populations is known as:
Official previous-year question
Held on 30 Apr 2013 · Verified 9 Jul 2026.
Options
- A
Migration
- B
Natural Selection
- C
Genetic drift
- D
Mutation.
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