NEET Biology question

In man, which of the following genotypes and phenotypes may be the correct result of aneuploidy in sex chromosomes?

(A)22 pairs+XXY malesCorrect
(B)22 pairs+XX females
(C)22 pairs+XXXY females
(D)22 pairs+X females

Answer: (A)

Solution

Klinefelter's syndrome is a trisomic aneuploidy (2n+1) in which an affected male has an extra X chromosome, giving 22 pairs of autosomes plus XXY, matching option (a); normal 22 pairs + XX describes a euploid female (not an

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Question ID VK-119578