NEET Biology question

Genetic diagnosis by DNA testing:

(A)Detects only mutant and normal alleles
(B)Can be done only on eggs or sperms
(C)Involves hybridization to ribosomal RNA
(D)Utilizes restriction enzymes and a polymorphic siteCorrect

Answer: (D)

Solution

Genetic diagnosis is not restricted to germ cells and does not involve hybridization to ribosomal RNA, whereas classic DNA-based prenatal diagnosis (e.g., of sickle cell anaemia) works by using a restriction

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Question ID VK-124938