Part of genome naturally’s given rise to plant (7)
I believe the answer is:
anemone
'plant' is the definition.
(anemone is a kind of plant)
'part of genome naturally's given rise' is the wordplay.
'part of' indicates a hidden word.
'given rise' says the letters should be written backwards (in a down clue, letters go up).
'enomena' is hidden within 'genome naturallys'.
'enomena' in reverse letter order is 'ANEMONE'.
'to' is the link.
(Other definitions for anemone that I've seen before include "White woodland flower" , "Pretty flower or sea animal" , "bloom" , "Flowering plant - mean one (anag)" , "bloomer" .)