Related Clues:

• Subject for Kinsey
• One cause of an 'R' rating
• The Boston Marathon, for one
• ___ against the clock
• Kinsey concentration
• Chromosome determinant
• Participate in a relay
• Health class topic
• Dr. Ruth’s field
• Some census info
• Kinsey concern
• Pennant __
• Clear hurdles, say
• Word after "safe" or "same"
• Thing a kid may be challenged to