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Sex Determination in Humans

In Drosophila...

Question

In Drosophila female has a pair of chromosomes

A

ZZ

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B

XX

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C

YY

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D

ZW

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Solution

The correct option is B XX
In Drosophila melanogaster there are 4 homologous pairs of chromosomes: 2 pairs of large autosomes, ( one slightly smaller than the other pair), 1 pair of very small autosomes, and a pair of sex chromosomes. Females normally have two X chromosomes; males have one X and one tiny Y chromosome.

So, the correct answer is 'XX'.

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