NEET Biology question

A gene is said to be dominant if

(A)It expresses its effect only in the homozygous state
(B)It expresses its effect only in the heterozygous condition
(C)It expresses its effect both in the homozygous and heterozygous conditionCorrect
(D)It never expresses its effect in any condition

Answer: (C)

Solution

By definition, a dominant allele produces its characteristic phenotype whenever at least one copy is present — whether the individual is homozygous dominant () or heterozygous () — because it masks the recessive allele's effect in the heterozygote.

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Question ID VK-120232