Full chromosome set (6)
I believe the answer is:
genome
'full chromosome set' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for genome that I've seen before include "is the making of you" , "Complete set of individual's chromosomes" , "Full chromosome set" , "Cocktail, borer" , "The full DNA sequence of an organism" .)