Learn about the xx and xy chromosomes, the sex determination system, and other chromosome combinations. 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). Sex chromosome, either of a pair of chromosomes that determine whether an individual is male or female The sex chromosomes of human beings and other mammals are designated by scientists as x and y In humans the sex chromosomes consist of one pair of the total of 23 pairs of chromosomes. The x chromosome is larger than y because it carries more instructions
The x chromosome has some instructions to make body parts that all people have, and others for body parts that only females have A karyotype is a complete set of chromosomes from an organism or species This is a human male karyotype In the red box, you see the sex. Xx and xy chromosomes are only part of the story Discover how sex chromosomes vary naturally and why biological sex isn't always binary
