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BIOLOGY
Asked by Sarah

Are the sex chromosomes (for humans X and Y ) expressed in all somatic cells? Or just those cells of organs that are related somehow to sexual phenotype (primary and secondary sexual characteristics)?

Yes, they are expressed in all somatic cells, but in general they only make a difference to the characteristics of certain tissues. If a cell didn't contain all 23 pairs of chromosomes, it wouldn't be viable so it would die. I hope this helps!

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Beatrix Huissoon
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