Drosophila flies with XXY genotype are females, but human berings with such genotype are abnormal ma

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Drosophila flies with XXY genotype are females, but human berings with such genotype are abnormal males. It shows that

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In human berings, the presence of a Y-chromosome is required for the sevelopment of a male sex phenotype. X-chromosomes present in any number (XXX, XXXX) in the absence of a Y- chromosome gives ise to female. Presence of even a single Y-chromosome confers maleness. In Drosophila, Y-chromosome plays no Significant role in determination. In Drosophila male determiners were located on autosomes. One X and two autosomes produce male while two X (X, X) and two autosomes produce female.

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