NEET Biology question

Harmful mutation does not get eliminated from the gene pool because they are mainly

(A)Recessive, which have harmful effect on population and carried by heterozygous individualsCorrect
(B)Dominant, which have beneficial effect on population and carried by homozygous individuals
(C)Carried from one generation to another generation through autosomal chromosomes
(D)They show genetic drift

Answer: (A)

Solution

Most harmful mutations are recessive, so their deleterious effect remains hidden/masked in heterozygous carriers (who also carry one normal, dominant allele); because these mutations are not phenotypically exposed in heterozygotes, natural selection cannot act against them directly, allowing them to persist and

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Question ID VK-120023