X chromosome
Noun
Meaning
X chromosome (plural X chromosomes)
(genetics) A mammalian sex chromosome. Cells of females have a pair of X chromosomes while cells of males have an X and a Y.
X-chromosome (plural X-chromosomes)
(genetics) Alternative spelling of X chromosome
Alternative names
X-chromosome
Synonyms
Hypernyms
Related terms
Examples
An example of facultative heterochromatin is X chromosome inactivation in female mammals: one X chromosome is packaged as facultative heterochromatin and silenced, while the other X chromosome is packaged as euchromatin and expressed.
Because one X chromosome is inactivated at random in each cell during a woman's development, it is possible for her to have four different cone types, as when a carrier of protanomaly has a child with a deuteranomalic man.
A mother who is a carrier has a 50% chance of passing the faulty X-chromosome to her daughter, while an affected father will always pass on the affected gene to his daughters.
Complete AIS main Partial AIS main Mild AIS main Genetics Location and structure of the human androgen receptor: Top, the AR gene is located on the proximal long arm of the X chromosome.
By determining the number of CGG repeats on the X chromosome, this method allows for more accurate assessment of risk for premutation carriers in terms of their own risk of fragile X associated syndromes, as well as their risk of having affected children.
Cause Turner syndrome is caused by the absence of one complete or partial copy of the X chromosome in some or all the cells.