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In Drosophila, the sex is determined by...

In Drosophila, the sex is determined by

A

The ratio of number of X-chromosomes to the sets of autosomes

B

X and Y chromosomes

C

The ratio of pairs of X-chromosomes to the pairs of autosomes

D

Whether the egg is fertilized or develops parthenogenetically

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The correct Answer is:
A
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