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31 March, 09:30

How many chromosomes does a human zygote have and where did these chromosomes come from originally?

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  1. 31 March, 09:55
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    46 chromosomes. 23 pairs. 23 chromosomes come from the egg (from the mother) and 23 come from the sperm (from the father). Haploid (containing one set of chromosomes) sperm and egg fuse to form a diploid (containing two sets of chromosomes, one from each parent) zygote.
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