Related Clues:

• Action
• See 40-Across
• Question answered by ''M'' or ''F''
• Cause of some R ratings
• Scandal subject
• Birth certificate info
• ID info
• It separates the girls from the boys
• Chromosome factor
• Dr. Ruth's field
• Westheimer subject
• Survey item
• Item on a driver's license
• Application check box
• F/M choice