the sex chromosome that is present in both sexes: singly in males and doubly in females
"human females normally have two X chromosomes"
A mammalian sex chromosome. Cells of females have a pair of X chromosomes while cells of males have an X and a Y.
The X chromosome is one of the two sex-determining chromosomes in many animal species, including mammals, and is found in both males and females. It is a part of the XY sex-determination system and X0 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, after it was discovered later.
U.S. National Library of Medicine
The female sex chromosome, being the differential sex chromosome carried by half the male gametes and all female gametes in human and other male-heterogametic species.
The numerical value of x chromosome in Chaldean Numerology is: 7
The numerical value of x chromosome in Pythagorean Numerology is: 4
Sample Sentences & Example Usage
I don't think because the child has one extra chromosome they should be able to snuff that life out.
You’re going along the genome and there is the X chromosome or there are genes expressed in testes. Basically, these parts of the genome have less Neanderthal or Denisovan.
We see a lot less compared to the rest of the genome, you’re going along the genome and there is the X chromosome or there are genes expressed in testes. Basically, these parts of the genome have less Neanderthal or Denisovan.
There is a correlation between a common and avoidable risk factor, that is smoking, and the most common human mutation -- loss of the Y chromosome, this ... may in part explain why men in general have a shorter life span than women and why smoking is more dangerous for men.
We used a bacterial artificial chromosome library to generate and verify sex specific sequence and probes that were important to determine the underlying sex of individuals, a BAC library is constructed by cutting up the dragon DNA, the whole genome, and inserting the fragments into bacterial colonies, one fragment per colony, so you can pull particular dragon sequence out at will.
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"x chromosome." Definitions.net. STANDS4 LLC, 2017. Web. 29 Mar. 2017. <http://www.definitions.net/definition/x chromosome>.