Question

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

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

Answer 1

The correct option is C Klinefelter's syndrome

Klinefelter's syndrome is caused due to an additional copy of X-chromosome and hence the karyotype becomes 47, XXY. These individuals have overall masculine development but also show gynaecomastia (development of breasts). Such individuals are sterile.