Related Clues:

• Watson-Crick model
• Modern-day evidence
• Genetic letters
• Kind of fingerprint
• Some forensic evidence
• See 48-Across
• Modern means of identification
• Subj. of the 1962 Nobel Prize in Medicine
• Crime scene evidence
• Genetic material
• Means of ID
• Life's blueprint
• Twins share them
• It may be recombinant
• Focus of a genome study