autogenous (adj.)

"self-generated," 1846, earlier autogeneal (1650s), from Greek autogenetos "self-born," from autos "self" (see auto-) + genetos "born," from genes "formation, creation" (from PIE root *gene- "give birth, beget"). Modern form and biological use of the word said to have been coined by English paleontologist Richard Owen (1804-1892).