In a gene pool,along with beneficial mutation | vedclass

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(B) Harmful mutations are not eliminated from the gene pool primarily because most of them are recessive. In a diploid population,these recessive alle

Vedclass · Accepted Answer

$I$ and $II$

Vedclass · Answer

(B) Harmful mutations are not eliminated from the gene pool primarily because most of them are recessive. In a diploid population,these recessive alleles are masked in the heterozygous state $(Aa)$,where the dominant allele $(A)$ expresses the normal phenotype,thus protecting the individual from the harmful effects of the recessive mutation $(a)$. Since the mutation is not expressed in the phenotype of the heterozygote,it is not subjected to natural selection,allowing it to persist in the gene pool. Statements $I$,$II$,and $IV$ do not explain the persistence of harmful recessive mutations in the gene pool. Therefore,$I$ and $II$ are incorrect explanations.

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