Biomolecule? In DNA see variant with added oxygen (9)
I believe the answer is:
adenosine
'variant with added oxygen' is the definition.
The definition and answer can be both substances as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
'biomolecule? in dna' is the wordplay.
I cannot quite see how this works, but
'in' is present in the answer.
This may be the basis of the clue (or it may be nonsense).
'see' is the link.
Can you help me to learn more?
(Other definitions for adenosine that I've seen before include "Sugar molecule" , "Nucleoside" .)