What is the term for the differences observed between male and female skeletons?

The term that describes the differences observed between male and female skeletons is known as sexual dimorphism. This concept refers to the distinct physical differences between the sexes of a species, which can include variations in size, shape, and skeletal structure. In human evolution, these differences can manifest in features such as pelvic shape, skull characteristics, and overall body size, providing insights into the biological roles and reproductive strategies of males and females throughout human history.

Bipedal adaptations refer to the evolutionary changes that support walking on two legs, while sexual selection pertains to the process by which certain traits become more or less common depending on an individual's ability to attract mates. Gender variance deals with the social and cultural aspects of gender identity, rather than biological differences in the skeleton. Therefore, sexual dimorphism is the most accurate term to describe the anatomical differences between male and female skeletons.