NEET Biology question

Which of the following abnormalities, results from an unnatural presence of a Barr body?

(A)Turner's syndrome
(B)Down's syndrome
(C)Klinefelter's syndromeCorrect
(D)All of these

Answer: (C)

Solution

A Barr body is the condensed, inactivated X chromosome normally seen in females (who have two X chromosomes). In Klinefelter's syndrome (44+XXY), an affected male abnormally possesses one Barr body because of the extra X

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Question ID VK-119751