Sex determination in humans and Drosophila is similar because
A) females are hemizygous.
B) males have one X chromosome and females have two X chromosomes.
C) all males from both species always have one Y
Chromosome.
D) secondary sex characteristics are determined by genes on the X chromsome.
E) the ratio of X chromosomes to sets of autosomes determines maleness or femaleness.
Correct Answer:
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