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Principles of Inheritance and Variation

The Klinefelter’s syndrome has chromosomal constituent
A. 44A+X0
B. 45A+XY
C. 44A+XXY
D. None of them

C. 44A+XXY

Klinefelter’s syndrome is caused by the presence of an additional copy of X-chromosomes, resulting in the karyotype of 44+XXY.
Sex of the individual is masculine but possess feminine characters.
Gynaecomastia i.e., development of breasts.
Poor beard growth and often sterile.
Feminine pitched voice

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