Sex determination may refer to:
Development of an organism's sex A sex-determination system, a biological system that directs the development of sexual characteristics in an organism Sexual differentiation, the development of sexual characteristics in sexually reproducing organisms in general Sexual differentiation in humans
Discernment of an organism's sex
Determination of sex, the scientific or medical discernment of an infant's biological sex at birth Prenatal sex discernment, prenatal testing for the discernment of the fetal sex in humans Sex assignment, a colloquial term for the discernment of an infant's sex at birth Sexing, used by biologists and agricultural workers to discern the sex of livestock or other animals Chick sexing, determination of the sex of newly-hatched chicks
See also
Gender, including biological sex Passing (gender), relating to the perception of gender, especially of transgender people Sexual dimorphism, a phenotypic difference between males and females of the same species, used in sex discernment Sex differences in humans