The clue "Genetic code letters" last appeared in the USA Today crossword on March 30, 2016. The correct answer for this puzzle is "RNA", a 3-letter word.
Solution RNA is our most searched for solution by our visitors. Solution RNA is 3 letters long. We have 1 further solutions of the same word length.
There are 2 solutions. The longest is DNA with 3 letters, and the shortest is DNA with 3 letters.
Indeed, the puzzle clue "GENETIC CODE LETTERS" has seen a surge in lookups recently (last checked: 17 Dec 2025). Apparently it´s giving players some headaches!
Use our smart search feature to filter by word length. Our system organizes results by frequency and relevance. Search through millions of answers to thousands of crossword clues—for free!
Solutions are between 3 and 3 letters long.