1.

Which one is sex determination factor in human being?A) X-chromosomeB) Y-chromosomeC) Both a and bD) None of these

Answer»

Correct Answer is: C) Both a and b

The X chromosome is one of the two sex chromosomes in humans (the other is the Y chromosome). Females have two X chromosomes, while males have one X and one Y chromosome.

Early in embryonic development in females, one of the two X chromosomes is randomly and permanently inactivated in cells other than egg cells.



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