XY sex-determination system
METHOD OF DETERMINING SEX
XY sex determination system; XY sex determination; Chromosome 23; Chromosome 23 (human); Maternal influence on sex determination; Human chromosome 23; Genetics of gender; X-Y sex determination; XX chromosome; XY chromosome; XY-male; XX-female; XY male; Human Chromosome 23
The XY sex-determination system is a sex-determination system used to classify many mammals, including humans, some insects (Drosophila), some snakes, some fish (guppies), and some plants (Ginkgo tree). In this system, the sex of an individual is determined by a pair of sex chromosomes.