Question

What is the genetic disorder in which an individual has an overall masculine development gynaecomastia, and is sterile?

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

Answer 1

The correct option is B Klinefelter's syndrome

Individuals with Klinefelter's syndrome have trisomy of sex chromosomes as $44+XXY\left(47\right)$. They show overall masculine development, gynaecomastia and are sterile.

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