x chromosome
Definition
- Noun:
- The sex chromosome present in both sexes: The X chromosome is one of the two types of sex chromosomes. It is present in a single copy in males (XY) and in two copies in females (XX).
Usage
- The X chromosome carries genes responsible for various traits and functions, many unrelated to sex determination.
- In biological and genetic contexts, "X chromosome" is used to describe chromosomal composition, inheritance patterns, and associated conditions.
Examples
- Noun:
- Human females normally have two X chromosomes.
- A male inherits his X chromosome from his mother.
- Some genetic disorders are linked to the X chromosome.
Advanced Usage
- X-linked: Referring to genes or traits located on the X chromosome.
- Hemophilia is an X-linked recessive disorder.
- X-inactivation: A process in female mammals where one of the two X chromosomes is largely silenced in each cell.
- X-inactivation ensures that females do not have twice the gene activity of males for X-linked genes.
Variants and Related Words
- Y chromosome (n): The sex chromosome typically present only in males, paired with an X chromosome.
- Autosome (n): Any chromosome that is not a sex chromosome.
- Sex chromosome (n): A chromosome involved in determining the sex of an organism, such as the X or Y chromosome.
Synonyms
- Sex chromosome (when specified as the X type). Note: This is a more general term that includes the Y chromosome.
Related Phrases
- X chromosome inheritance: The pattern of how the X chromosome is passed from parents to offspring.
- The study focused on X chromosome inheritance in fruit flies.
Noun
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the sex chromosome that is present in both sexes: singly in males and doubly in females
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human females normally have two X chromosomes
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