Q. Which one of the following conditions correctly describes the manner of determining the sex in the given example?
A) XO type of sex chromosomes determine male sex in grasshopper
B) XO condition in humans as found in Turner’s syndrome, determines female sex
C) Homozygous sex chromosomes (XX) produce male in $Drosophila$
D) Homozygous sex chromosomes, (ZZ) determine female sex in birds.
Explanation
Grasshopper is an example of XO type of sex determination in which the male have only one X-chromosome besides the autosomes, whereas females have a pair of X-chromosomes (2A + XX).
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.