Find out the differences between sex and gender, and the conditions linked to x and y chromosomes. 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. 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). In humans the sex chromosomes consist of one pair of the total of 23 pairs of chromosomes
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. Cracking the code to sex and genetics Understand how these chromosomes influence your biology and health. Learn how the x and y chromosomes carry instructions that decide our biological sex, and how intersex people have both masculine and feminine body parts
