how is sex determination regulated class 10 bio
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The explanation lies in the fact that all humans chromosomes are not paired . Most human chromosomes have a maternal and a paternal copy , and we have 22 such pairs . but one pair is called the sex chromosomes , is odd in not always being a perfect pair . Women have a perfect pair of sex chromosomes which is XX and men's have mismatched pair of sex chromosomes which is XY .
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