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Sex chromosomes are the genetic elements that define a person's biological sex This simple combination plays a significant role in sexual differentiation. Learn about the xx and xy chromosomes, the sex determination system, and other chromosome combinations.

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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). The absence of the y chromosome leads to female development 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. 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. The determination of sex in humans is primarily governed by the presence of two types of sex chromosomes Females typically have two x chromosomes (xx)

Each parent contributes one sex chromosome, with the mother always providing an x chromosome through her.

Sex determination sex determination involves the x and y chromosomes Females have two x chromosomes (xx) Males have one x and one y chromosome (xy) The presence of the y chromosome triggers male development