AIPMT PRELIMS 2000 Botany Sex Determination MCQ Question
In Drosophila the XXY condition leads to femaleness whereas in human beings the same condition leads to Klienfelter's syndrome in male. It proves :
In human beings Y chromosome is active in sex determination
Y chromosome is active in sex determination in both human beings and Drosophila
In Drosophila Y⁻chromosome decides femaleness
Y chromosome of man have genes for syndrome
Correct Answer
Detailed Explanation
In humans, the presence of a Y chromosome determines maleness, while in Drosophila, the ratio of X chromosomes to autosomes determines sex.
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