Related Clues:

• Kind of 'fingerprint'
• Watson and Crick subject
• It has shoulders but no head
• Genetic evidence
• Prerelease version
• Battery fill
• Strand from a parent
• Long stretch
• There's no accounting for it
• Hydrochloric, for one
• Strands in a cell?
• Take a nibble at
• As yet unmarketed, as software
• Test material
• Genomic matter