x chromosome

Thân thiện

A female human cell contains two X chromosomes.

Definition

1. 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.

Học thuật

Noun

1. the sex chromosome that is present in both sexes: singly in males and doubly in females
   • human females normally have two X chromosomes

Từ đồng nghĩa

• x chromosome