A) in human being Y-chromosome is active in sex determination
B) Y-chromosome is active in sex determination in both human beings and Drosophila
C) in Drosophila Y-chromosome decides femaleness
D) Y-chromosome of man have genes for syndrome
Correct Answer: A
Solution :
In Drosophila XXY leads to femaleness. Because Y-chromosomes has no contribution in 4 femaleness. Sex in Drosophila is determined by sex chromosome-X and autosome A. While in human XXY condition will lead to genetically male with under developed testes and a zoospermia. It is 4 caused by the union of a non-disjunction XX egg and normal X egg and abnormal XY sperm. It indicates that in human being Y-chromosome is a active in sex determination.
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