NEET Biology question

A woman with 47 chromosomes due to three copies of chromosome 21 is characterized by

(A)Superfemaleness
(B)Triploidy
(C)Turner's syndrome
(D)Down's syndromeCorrect

Answer: (D)

Solution

Three copies of chromosome 21 (trisomy 21) in an individual with an otherwise normal diploid complement (46+1 = 47 total chromosomes) is the defining chromosomal basis of Down's syndrome. Superfemaleness (a,

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Question ID VK-120188