NEET BIOLOGY

GENETICS AND EVOLUTION

EVOLUTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of these can change allele frequencies in a population?
A
Sexual selection
B
Genetic drift
C
Gene flow
D
Natural selection
E
All of these can change allele frequencies
Explanation: 

Detailed explanation-1: -Natural selection, genetic drift, and gene flow are the mechanisms that cause changes in allele frequencies over time.

Detailed explanation-2: -These are the following: mutations, genetic recombination, gene flow or gene migration, genetic drift, natural selection.

Detailed explanation-3: -From the theorem, we can infer factors that cause allele frequencies to change. These factors are the “forces of evolution.” There are four such forces: mutation, gene flow, genetic drift, and natural selection.

Detailed explanation-4: -These changes may be due to mutations, which can introduce new alleles into a population. In addition, new alleles can be introduced in a population by gene flow, which occurs during breeding between two populations that carry unique alleles.

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