Related Clues:

• Nucleic acid, abbr.
• Protein-building polymer
• Watson's code letters
• Messenger material
• High-tech "fingerprint"
• Stuff of life
• Double-helix material
• Fingerprint with a twist?
• It's usually single-stranded
• It could prove paternity
• Crime lab letters
• Sample in a crime lab
• Human genome project stuff
• "CSI" concern
• Messenger molecule