What's in roe? See answer (3)
I believe the answer is:
ova
'what's in roe? see answer' is the definition.
I can't judge whether this defines the answer.
'what's in roe? see answer' is the wordplay.
'what's in' says to take the centre.
'see' becomes 'v' (short for 'vide', Latin meaning 'see elsewhere').
'answer' becomes 'a' (abbreviation eg in Q and A).
The centre of 'roe' is 'o'.
'o'+'v'+'a'='OVA'
Can you help me to learn more?
(Other definitions for ova that I've seen before include "Latin egg-cells" , "Prerequisite for procreation" , "Female egg-cells" , "Likely end for Russian Fed cup players" , "Female reproductive cells" .)