Crossword Genius

Genetic messenger (3)

Ross

I believe the answer is:

rna

'genetic messenger' is the definition.
(I've seen this in another clue)

This is the entire clue.

(Another definition for rna that I've seen is " Messenger".)

I've seen this clue in the Universal, the King Feature Syndicate, The New York Times, The Washington Post, the USA Today, the LA Times and The Wall Street Journal.
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