The words sex and gender are commonly used interchangeably, but many linguists would argue that their usage is quite distinct. Sex refers to the biological and physiological characteristics, while gender refers to behaviors, roles, expectations, and activities in society.
Sex refers to male or female, while gender refers to masculine or feminine.
The differences in the sexes do not vary throughout the world, but differences in gender do.
Birth Certificates should be uniformed across the Nation as well as the Commonwealth. The Certificate of Birth should remain the same throughout life, as one is unable to change their chromosomal make-up from XX to XY or from XY to XX through surgical or aesthetics.
Would recommend a Birth Certificate should state one's "Sex" at Birth to be "XX" or "XY".