dna
- n (biochemistry) a long linear polymer found in the nucleus of a cell and formed from nucleotides and shaped like a double helix; associated with the transmission of genetic information
dna chip
- n a microchip that holds DNA probes that form half of the DNA double helix and can recognize DNA from samples being tested
dna fingerprint
- n biometric identification obtained by examining a person's unique sequence of DNA base pairs; often used for evidence in criminal law cases