In mammals, the Sry gene on the Y chromosome is instrumental in the male sex determination process. However, in Drosophila, the Y chromosome is not associated with male sex determination, but it contains genes required for sperm development in the adult. The copy number of the X chromosome is linked to sex determination. Drosophila with two X chromosomes (e.g., XX) are female, and those with one X chromosome (e.g., XY) are male.

Question

What would be the resultant phenotype of an XO Drosophila genotype?
Selected answer will be automatically saved. For keyboard navigation, press up/down arrow keys to select an answer.

a
A fertile female

b
A sterile female

c
A fertile male

d
A sterile male

Answer 1

b
A sterile female