Genetic letters
The crossword clue "Genetic letters" is answered by RNA, a 3-letter entry. Used 265 times across 37 distinct years; most recently in 2026; first recorded in 1986. It appears in 17 publications in the xd corpus. Every figure on this page comes from the pilot data itself.
The answer
RNA
3 letters. See every clue for this answer on the RNA answer page.
Used 265 times across 37 distinct years; most recently in 2026; first recorded in 1986. It appears in 17 publications in the xd corpus. Frequency and last-seen figures come from the xd crossword corpus only.
Other answers for this clue
The same clue has also been answered these ways in the xd corpus. Answers inside this pilot link to their own answer page.
- RNAS (3 uses in xd)
Other clues for RNA
Every other clue in this pilot answered by RNA, most used first.
- Genetic messenger - used 141 times, most recently in 2026
- Messenger molecule - used 115 times, most recently in 2026
Related clues
Pilot clues of the same answer length that share a word with this clue, or match its answer pattern when no word is shared. Most used first.
- Debtor's letters - IOU, used 249 times
- Explosive letters - TNT, used 225 times
- Letters before an alias - AKA, used 194 times
- Alias letters - AKA, used 146 times
- Battleship letters - USS, used 124 times
- Ambulance letters - EMS, used 111 times
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