Question

A pregnant human female was advised to undergo MTP. It was diagnosed that the fetus she was carrying had developed from a zygote having 45 chromosomes with only one X chromosome.

1. What is this condition called and how does it arise?
2. Why was she advised to undergo MTP?

Answer 1

1. The embryo has Turner’s Syndrome due to aneuploidy of the sex chromosome. Such a disorder is caused due to the absence of one of the X chromosomes, i.e., 45 with XO.
2. She was advised MTP as the child will have the following problems:
   
   1. rudimentary ovaries
   2. poorly developed breasts
   3. lack of other secondary sexual characteristics
   4. delayed or no onset of the menstrual cycle, and infertile.