X chromosome
From Wikipedia, the free encyclopedia
The X chromosome is one of the two sex chromosomes which decide if a person is a boy or a girl. The other chromosome is the Y chromosome.
Females have two X chromosomes, males have one X and one Y. An egg always carries a single X, while sperms carry either an X or a Y. That is how sex is determined in humans,[1] and in most other mammals.
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References [change]
- ↑ Bainbridge, David A. 2003. The X in sex: how the X chromosome controls our lives. Harvard.
