Related Clues:

• 'Nova' subj.
• Genetics, e.g.: Abbr.
• High-school subj.
• Fi lead-in
• -- -fi movie
• Chem. or phys.
• Ecol., e.g.
• Sch. subj
• Anat. or biol.
• Nova subj.
• __-fi
• Artillery, e.g.: Abbr.
• Bio., e.g.
• Bot. or chem.
• 55 Across, for example: Abbr.