Question

In human beings $45$ chromosomes/ single X/XO abnormality causes

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

Answer 1

The correct option is C Turner's syndrome

Turner's syndrome affects only females as the result of a missing or partially missing X chromosome. Hence they have 45 chromosomes or it is also referred to as single X.

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