X chromosome
Sex chromosome present in both sexes in the XY and X0 sex-determination systems
X chromosome
The X chromosome is one of the two sex chromosomes in many organisms, including mammals, and is found in both males and females. It is a part of the XY sex-determination system and XO sex-determination system. The X chromosome was named for its unique properties by early researchers, which resulted in the naming of its counterpart Y chromosome, for the next letter in the alphabet, following its subsequent discovery.
Read on Wikipedia · Image National Human Genome Research Institute, Public domain
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