NEET Biology question

...A... individual show ...B... phenotype but they are the ...C... of the disease as there is 50% probability of transmission of mutant gene to its progeny. Choose the correct option for A, B and C

(A)A-homozygous, B-affected, C-carrier
(B)A-homozygous, B-unaffected, C-carrier
(C)A-heterozygous, B-unaffected, C-carrierCorrect
(D)A-heterozygous, B-affected, C-carrier

Answer: (C)

Solution

A heterozygous individual, carrying one normal and one mutant (recessive) allele, outwardly shows the unaffected (normal) phenotype because the normal dominant allele masks the recessive mutant allele; however,

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Question ID VK-120061