Question

A man with enlarged breasts, sparse body hair and XXY chromosome complement is suffering from

• A. Down's syndrome
• B. Turner's syndrome
• C. Klinefelter's syndrome
• D. Super female

Answer 1

Answer: (C)

Klinefelter's syndrome

1) Down syndrome also known as trisomy 21, is a genetic disorder caused by the presence of all or part of the third copy of chromosome 21.

2) Turner syndrome is a condition in which a female is partly or completely missing an X chromosome.

3) Klinefelter's syndrome is a genetic condition in which a male is born with an extra copy of the X chromosome(XXY). Symptoms include enlarged breasts, less body hair, Absent, delayed or incomplete puberty etc.

4) Super female is characterized by the presence of an extra X chromosome in each cell of a female. Those affected are often taller than average.

So, the correct answer is 'Klinefelter's syndrome'.