monogeny
‘theory that all living organisms originate from a single source or the production from one sex’
Lexical development traced from the Tamil root:
mono ‘one’ + -geny ‘production, origin’< F. -génie, Mod.Lat. -genia < GK. -geneia, -genes ‘born, produced’ < juhnee < gene- < Tamil īṉ
Other meanings: theory that humankind originated from a single pair of ancestors, the production of offspring (resulting from sexual reproduction) of one sex, the generation of an individual from one parent which develops both male and female products; vegetative reproduction.