Biological Sex

Biological sex (as distinct from gender (which is a matter of personal identity)) is the physical trait that determines whether a sexually reproducing organism produces sperms or eggs. Other dimorphisms are commonly tied to sex -- egg-producing mammals also usually grow engorged breasts which produce milk; sperm-producing kuo-toans are tiny fishes that aren't even properly sapient, as contrasted with egg-producing kuo-toa, who are fully humanoid.
==Sex Change==
Today, many magic items induce an alteration of the user's biological sex -- some of which against the user's volition; these items are commonly considered cursed.
In fact, much effort went into the invention of sex change magic; in 314ai, a cleric of Murgatroyd named Anîîs Miep finally cracked the problem, inventing spells, elixirs, and wondrous items for the purpose. Before this, all sex changes were accomplished mundanely, through primitive surgery.
category:Body