Principle of Inheritance and VariationHard

Question

Which disease has XXY chromosome constitution?

Options

A.Down′s syndrome
B.Turner′s syndrome
C.Klinefelter′s syndrome
D.Okazaki syndrome

Solution

Down′s syndrome is due to trisomy of 21st chromosomes; Turner′s syndrome having XO genotype is caused by the absence of Xchromosomes in females; klinefelter′s syndrome (XXY) is due to trisomy of sex chromosome.

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