The basis of Klinefelter's syndrome is the characteristic of which sex chromosomes?

XXY

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YYY

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None of the above

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Solution

The correct option is A XXY
Klinefelter syndrome 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. Thus, option A is correct and other options are wrong.

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Similar questions

Q. Match the syndromes and chromosomal abnormalities given in columns.

	List I - Syndrome		List II - Chromosomal abnormalities
A	Klinefelter syndrome	p	Trisomy 13
B	Turner's syndrome	q	Trisomy 18
C	Super female	r	44+XXY
D	Patau's syndrome	s	44+XXX
		t	44+XO

Q. What is the difference between klinefelter syndrome and homosexuality?
A person affected with klinefelter syndrome shows secondary characters of male or female???

Q. The basis of Turner's syndrome and superfemales are the characteristic of which of the following sex chromosomes?

Q. What is the genotype of a person having Klinefelter syndrome?

Assertion [A]: Klinefelter syndrome occurs only in males.

Reason [R]: Klinefelter syndrome is characterised by an additional Y chromosome in the karyotype.

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