Crossword Genius

Forensic science molecule (3)

Ross

I believe the answer is:

dna

(Other definitions for dna that I've seen before include "Genetic material often used by police" , "Bodily substance that stores genetic information - police use it to identify" , "It carries genetic information" , "Substance in chromosomes that stores genetic information, used by police" , "Initially, it stores genetic information" .)

I've seen this clue in the Universal.
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