Where does “Apomixis” come from?

Apomixis (German) comes from Ancient Greek ᾰ̓πό — away; from, away from.

Ancestry of “Apomixis”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	ᾰ̓πό	away; from, away from

Apomixis — Etymology, Origin & Word History | Etymology Explorer