A sex difference is a distinction of biological and/or physiological characteristics typically associated with either males or females of a species in general. This article focuses on quantitative differences which are based on a gradient and involve different averages. For example, men are taller than women on average, but an individual woman may be taller than an individual man.
This article describes differences which clearly represent a binary male/female spilt, such as human reproduction. Women give birth to babies; men do not. Though some sex differences are controversial, they are not to be confused with sexist stereotypes.
Sexual dimorphism
Heredity
Stereoisomerism
Atrophy
Hypoplasia
Neuroplasticity
Hyperplasia
Hysteresivity