Question

Turner's syndrome is caused due to absence of any one of the $X$ and $Y$ sex chromosome. Such individuals show masculine as well as feminine development.

• A. If both assertion and reason are true and reason is the correct explanation of assertion
• B. If both assertion and reason are true but reason is not the correct explanation of assertion
• C. If assertion is true but reason is false
• D. If both assertion and reason are false

Answer 1

Answer: (D)

If both assertion and reason are false

Answer 2

Turner's syndrome occurs due absence of $X$ chromosome. Individuals having a single $X$ chromosome $2A+XO\, (45)$ have female sexual differentiation but ovaries are rudimentary. Other associated phenotypes of this condition are short stature, webbed-neck, broad chest, lack of secondary sexual characteristics and sterility. Thus, any imbalance in the copies of the sex chromosomes may disrupt the genetic information necessary for normal sexual development.