Related Clues:

• Double helix stuff
• Genetic profile
• Correspondence - African country rejecting half
• Genetic code
• 'Postal flipping strike!' I interposed
• 'Flipping postal strike!' I interposed
• Letters that sound macho?
• 'It's in the post', said he
• No woman is said to be suitable for this post
• Second name included for deoxyribonucleic acid
• Protection borne by Pat?
• Acid also taken up
• The postal system in Motherwell is first-class
• Acid responsible for transmission of heredity characteristics from parents to their children
• Illness gripping one? This would give body protection