males have x and y both chromosomes? why
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Males have one Y chromosome and one X chromosome, while femaleshave two X chromosomes. In mammals, the Y chromosomecontains a gene, SRY, which triggers embryonic development as a male. The Y chromosomes of humans and other mammals also contain other genes needed for normal sperm production.
(source:net)
(source:net)
amisha16:
thank u so much
no l dont deserve it...just copy paste
any way all the bst for xam
r u in eighth?
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