Non-random X chromosome inactivation in mammalian cells.

Abstract excerpt

A salient feature of mammalian X dosage compensation is that X-inactivation occurs without regard to the parental origin of either active or inactive X. However, there are variations on the theme of random inactivation, namely paternal X inactivation in marsupials and in placental tissues of some mammals. Whether inactivation is random or paternal seems to depend on the time when this developmental program is...

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