Double figures?
'double figures' is the definition.
The answer and definition can be both quantities as well as being plural nouns.
Perhaps there's an association between them I don't understand?
This is the entire clue.
Can you help me to learn more?
(Other definitions for twos that I've seen before include "Couples" , "Deuces" , "Pairs" .)
(Other definitions for clones that I've seen before include "Genetically identical organisms derived from a single cell" , "Organisms reproduced asexually" , "Identical copies produced by genetic engineering" , "Genetically identical copies" , "Propagates as with Dolly the sheep" .)