sex
biological system that determines an individual's sexually reproductive function
intersex
atypical congenital variations of sex characteristics
female organism
organism of the female sex
hermaphrodite
sexually reproducing organism that produces both male and female gametes
homogametic sex
sex of a species in which the sex chromosomes are the same; e.g. human females (with XX chromosomes); bird males (with ZZ chromosomes)
third gender
individual whose gender identity is not defined as male or female