Sex chromosome | Definition, Examples, & Facts | Britannica
Sex chromosome, either of a pair of chromosomes that determine whether an individual is male or female. The sex chromosomes of human beings and other mammals are designated by scientists as X and Y. In humans the sex chromosomes consist of one pair of the total of 23 pairs of chromosomes.

Sex chromosome - Wikipedia
Sex chromosomes (also referred to as allosomes, heterotypical chromosome, gonosomes, heterochromosomes, [1][2] or idiochromosomes[1]) are chromosomes that carry the genes that determine the sex of an individual. The human sex chromosomes are a typical pair of mammal allosomes.

What Are Sex Chromosomes (XX and XY Chromosomes)? - WebMD
Sex chromosomes are the genetic elements that define a person's biological sex. Learn about the XX and XY chromosomes, the sex determination system, and other chromosome combinations.

Sex Chromosomes: Definition, Purpose, Examples - Healthline
Sex chromosomes are chromosomes that affect your sexual anatomy and reproductive development. Most of us were raised with the idea that there are two sexes: male and female.

Sex Chromosome - National Human Genome Research Institute
A sex chromosome is a type of chromosome involved in sex determination. Humans and most other mammals have two sex chromosomes, X and Y, that in combination determine the sex of an individual. Females have two X chromosomes in their cells, while males have one X and one Y.

How Is Your Sex Determined? - Ask A Biologist
People usually have two sex chromosomes. Typically, embryos with one X and one Y chromosome develop into males. And those with two X chromosomes usually become females. We get one sex chromosome from our fathers, carried by sperm, and one from our mothers, carried by the egg.

7.6: Sex Chromosomes - Biology LibreTexts
The nuclei of human cells contain 22 autosomes and 2 sex chromosomes. In females, the sex chromosomes are the 2 X chromosomes. Males have one X chromosome and one Y chromosome.