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​Sex Chromosome

updated: May 20, 2022

Definition

A sex chromosome is a type of chromosome involved in sex determination. Humans and most other mammals have two sex chromosomes, X and Y, that in combination determine the sex of an individual. Females have two X chromosomes in their cells, while males have one X and one Y.

 Sex-chromosomes


Narration

Jyoti Dayal, M.S.
Jyoti G. Dayal, M.S.

Program Director

Division of Genomic Medicine