1.

Drosophila flies with XXY genotype are females but in case of humans, such individuals are abnormal males (Klinefelter's syndrome). This indicates that:

A. The Y chromosome has no role in sex determination.
B. In Drosophila, the Y chromosome is essential for sex determination.
C. The Y chromosome is male determining in humans.
D. The Y chromosome is female determining in Drosophila.
Answer» D. The Y chromosome is female determining in Drosophila.


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