NEET Biology question

Mutant genes that give slightly modified phenotypes are

(A)Heteroalleles
(B)Recessive alleles
(C)IsoallelesCorrect
(D)Dominant alleles

Answer: (C)

Solution

Isoalleles are alternative forms of a gene that are structurally distinct but produce phenotypes so similar to the wild type that they are often indistinguishable without specialised testing, exactly matching "mutant genes that give slightly modified phenotypes,"

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Question ID VK-119429