Related Clues:
- Single-stranded macromolecule
- Biological blueprint, briefly
- Hereditary helices
- What many markers are made of
- Genetic "blueprint"
- Scientific discovery of 1869
- Strand under a microscope
- Viroid material
- "Messenger" substance
- Cheek swab evidence
- Project ___ ('Big Brother' twist featuring half siblings who'd never met and a pair of swapping twins)
- Thing I learned about in bio that I know has something to do with copying genetic things I think
- Biological messenger with a code
- ID clincher, at times
- Single-stranded genetic molecule, for short