Sex (Biological)/Sex Assigned at Birth

The sex of an individual is determined by chromosomes (such as XX or XY), hormones, internal anatomy (such as gonads), hormone levels, hormone receptors, and genes, and external anatomy (such as genitalia). Typically, individuals are assigned the sex of male or female at birth. Biological sex is also known as natal sex or the preferred terminology “sex assigned at birth.” Those who present with ambiguous genitalia at birth and who are generally later confirmed with genetic testing to have chromosomes different from XX or XY at birth are often referred to as intersex. 

“By sex, we mean biological sex and biological and anatomical characteristics. They are not given because we are born with them; they are not given to us. They are male, female, and Intersex.”