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Sex chromosomes are the genetic elements that define a person's biological sex While we’re usually taught that there are two types — xx and xy — many more variations exist. Learn about the xx and xy chromosomes, the sex determination system, and other chromosome combinations.

In this system, the karyotypic sex of an individual is usually determined by a pair of sex chromosomes Sex chromosomes are more complex than most people think Typically, karyotypic females have two of the same kind of sex chromosome (xx), and are called.

Xx and xy chromosomes are only part of the story

Discover how sex chromosomes vary naturally and why biological sex isn't always binary Learn about dsds and intersex variations. These categories include 46,xx dsd, involving female virilization (in which a female acquires features associated with male hormones) 46,xy dsd, involving abnormalities in testicular differentiation or testosterone biosynthesis or action

Xx, sex reversal, in which the individual is phenotypically male Xy, sex reversal, in which the. Cracking the code to sex and genetics Understand how these chromosomes influence your biology and health.

While most people are typical xy males or xx females, many people are intersex

Intersex people are born with both masculine and feminine body parts Every intersex person is different, and the body parts they might have vary Just like there is no right way to be a boy or girl, there is no right way to be intersex.

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