A) XO type of sex chromosomes determine male sex in grasshopper.
B) XO condition in humans as found in Turner syndrome, determines female sex
C) Homozygous sex chromosomes (XX) produce male in Drosophila
D) Homozygous sex chromosomes (ZZ) determine female sex in birds
Correct Answer: A
Solution :
Grasshopper is an example of XO type of sex determination in which the males have only one X-chromosome besides the autosomes, whereas females have a pair of X-chromosomes.
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