dosage compensation

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A genetic process that compensates for genes that exist in two doses in the homogametic sex and one in the heterogametic sex as a result of their location on the X-chromosome. The process is not universal among species. For example, in Drosophila, the heterogametic male has one X-chromosome which doubles its effect, while in humans, in the homogametic female only one of the two X-chromosomes is functional.

Subjects: Biological Sciences.

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