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.
NEET UG 2013 — Zoology Evolution
Random unidirectional change in allele frequencies that occurs by chance in all populations and especially in small populations is known as:
Held on 30 Apr 2013 · Verified 9 Jul 2026.
Migration
Natural Selection
Genetic drift
Mutation.
Sign in to track your attempts and accuracy.
Sign in to keep a private note on this question. Nothing you write is ever public.
Sweet potato and potato represent a certain type of evolution. Select the correct combination of terms to explain the evolution.
Match List I with List II:  Choose the correct answer from the options given below :
Which one of the following factors will not affect the Hardy-Weinberg equilibrium?
Which evolutionary phenomenon is depicted by the sketch given in figure? 
Given below are some stages of human evolution. Arrange them in correct sequence. (Past to Recent) A. Homo habilis B. Homo sapiens C. Homo neanderthalensis D. Homo erectus Choose the correct sequence of human evolution from the options given below:
Work through every NEET UG Evolution PYQ, year by year.