NEET Biology question

In amniocentesis of a pregnant woman, it is found that the embryo contains both, Barr body and F-body. The syndrome likely to be associated with the embryo is

(A)Edward's syndrome
(B)Down's syndrome
(C)Klinefelter's syndromeCorrect
(D)Patau's syndrome

Answer: (C)

Solution

The presence of one Barr body (an inactivated X-chromosome, seen whenever more than one X is present) together with one F-body (a condensed Y-chromosome) indicates an XXY sex-chromosome complement, which corresponds to Klinefelter's

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Question ID VK-119643