Sex

Determination Sex determination is the process by which an organism's sex is determined genetically. It is a key factor in the development and maintenance of reproductive fitness in a wide range of species. It is important for the development and maintenance of species, as well as for reproductive fitness. It is used to distinguish between male and female and to choose the appropriate mating partners. Sex determination is also used in human genetics studies to study the inheritance of genetic illnesses, such as Down syndrome, and to study the effects of environmental factors, such as hormones, on sex differentiation.