Q. Which one of the following conditions of the zygotic cell would lead to the birth of a normal human female child?
A) Only one X chromosome
B) One X and one Y chromosome
C) Two X chromosomes
D) Only one Y chromosome
Explanation
[Solution from source] A normal human female has 44 autosomes plus two X chromosomes (44 + XX). A single X gives Turner's syndrome, X with Y gives a male, and a zygote with only a Y chromosome is not viable. Answer (3).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.