The disorder where an extra sex chromosome in the 23rd pair results in XXY, producing a male with reduced masculine characteristics resulting in enlarged breasts, obesity and excessive height, is called

1. APhenylketonuria (PKU)
2. BTurner's syndrome
3. CTay-Sachs disorder
4. DKlinefelter's syndrome

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Correct answer: D. Klinefelter's syndrome

Explanation

Klinefelter's syndrome (XXY) gives a male with reduced masculine traits, breast enlargement and tall stature.