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20 October, 09:05

Why do chromosomes in body cells exist in pairs?

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  1. 20 October, 09:09
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    Human body cells each contain 23 pairs of chromosomes. Parents pass on their genes to their offspring in their sex cells. A pair of chromosomes carry the same genes in the same place, on each chromosome within the pair. However, there are different versions of a gene called alleles.
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