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LiveScience
LiveScience
Nicoletta Lanese

Silent X chromosome genes 'reawaken' in older females, perhaps boosting brain power, study finds

Brain Live Science
An illustration of x chromosomes floating in space.

Dormant genes on the X chromosome may reawaken in old age, potentially giving the aging female brain a boost that the male brain doesn't receive.

This phenomenon may help to explain why, on many measures, females show a higher level of cognitive resilience in old age than males do.

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