Find out the differences between sex and gender, and the conditions linked to x and y chromosomes. 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 other 22 pairs of chromosomes are called autosomes Individuals having two x chromosomes (xx) are female Individuals having one x chromosome and one y chromosome (xy) are male The x chromosome resembles a large autosomal chromosome with a long and a short arm
The y chromosome has one long arm and a very short second arm. Learn how xx and xy chromosomes determine biological sex in humans and other species Find out the key features, genetic disorders, and inheritance patterns of each chromosome type. 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.
Discover the history of how the sex chromosomes were discovered and named by scientists.
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