Pick up the statements that are true about Klinefelter syndrome. A) Feminine sexual development is not completely suppressed. B) Karyotype is 47 XXY. C) The male is negative for Barr body. D) Secondary sexual characters are well developed.
A
B and D
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B
A and B
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C
B and C
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D
C and D
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Solution
The correct option is B A and B Klinefelter syndrome is also known as 47 XXY or XXY is a genetic disorder that affects males. Klinefelter syndrome occurs when a boy is born with one or more extra X chromosomes. Most males have one Y and one X chromosome. Having extra X chromosomes can cause a male to have some physical traits unusual for males. Secondary sexual characters do not appear. Male with Klinefelter syndrome (XXY) is positive for barr body. Although, some mascular development occur in Klinefelter syndrome but feminine sexual development is not entirely suppressed.