Answer:
ᴮ ʷᵒˡᵛᵉˢ
ʰᵒᵖᵉ ᵗʰᶦˢ ʰᵉˡᵖˢ
Reproductive system
Explanation:
39 purple stemmed plants
39 green stemmed plants
You'll end up with half and half! :)