Sex refers solely to the biological attributes of individuals, while gender is entirely a social construct without any biological basis.

Sex refers to the biological differences between males and females, such as reproductive organs and chromosomes. For example, someone who is biologically female typically has two X chromosomes and can give birth. On the other hand, gender is about how society views and defines what it means to be male or female. This includes roles, behaviors, and expectations that can vary from culture to culture and can change over time. So, while sex is based on biology, gender is shaped by social and cultural influences, meaning people can express their gender in many different ways that may not match their biological sex.