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Sex chromosomes are the genetic elements that define a person's biological sex Also find answers to frequently asked questions. Learn about the xx and xy chromosomes, the sex determination system, and other chromosome combinations.

Sex Chromosome Signs Stock Photography - Image: 33645772

Xx and xy chromosomes are only part of the story Learn about the differences between xx and xy chromosomes, their location, gamety, sex determination, and inactivation Discover how sex chromosomes vary naturally and why biological sex isn't always binary

Learn about dsds and intersex variations.

Cracking the code to sex and genetics Understand how these chromosomes influence your biology and health. In the xx/xy system, karyotypic females usually have two x chromosomes (xx), while karyotypic males usually have a single x and a single y chromosome (xy). Furthermore, xx chromosomes occur in homogametic sex while xy chromosomes occur in the heterogametic sex.

Females receive two x chromosomes, represented by xx Males receive an x and a y chromosome, represented as xy But where do the x and the y come from Like all chromosomes, the x and y chromosomes that determine gender are passed from parents to offspring

To understand how this happens, let’s look at a special type of cell division called.