Related Clues:

• Overtakes, in a way
• They may be spliced
• Circuits
• Blueprints of a sort
• Track units
• Chromosome occupants
• Hereditary factors
• Napkin holders?
• Track circuits
• Splicer's materials
• Pool activity
• Kelly and Hackman
• 200 at the Indy 500
• Baby seats
• Trait carriers