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Jan 20, 2025, 12:31 pm678 ptsHot
PHYSorgScience has revealed some of the secrets of the X chromosome, but many remain. In humans, female cells contain two X chromosomes (XX) and male cells contain one (XY). In each female cell, one X chromosome must be inactivated—crumpled up in such a way that the genetic code it contains cannot be read out.
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