Sex (trait)
- You may be looking for sexual intercourse.
Biological sex was a physical trait of many races, including humans (TV: Doomsday) and Time Lords. (COMIC: A Little Help from My Friends)
Humans
The Cybus Industries Cybermen of Pete's World sought to remove human sex to become identical. (TV: Doomsday)
Human women were sometimes regarded as the "fairer sex" (TV: Carnival of Monsters, The Time Warrior, The Ark in Space, The Talons of Weng-Chiang, Twice Upon a Time) while human men were regarded as the "dominant sex". (TV: The Time Monster)
By 200,000, "ladies, gentlemen, multi-sex, undecided or robot" were distinctly recognised traits. (TV: The Long Game)
Time Lords
Sex was flexible for Time Lords:
Biological sex is flexible among my people, and gender is merely a social construct.
Time Lords sometimes dreamed of being the opposite sex. (PROSE: Human Nature)