Crossword Genius

Hereditary info (3)

Ross

I believe the answer is:

dna

(Other definitions for dna that I've seen before include "Genetic code" , "Double-helix molecule (abbr.)" , "Initially, it stores genetic information" , "Deoxyribonucleic acid (abbreviation)" , "Substance in chromosomes that stores genetic data" .)

I've seen this clue in the Universal.
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