Answer: ychromosome

AnswerCrossword Clue
YCHROMOSOMEFactor in sex
YCHROMOSOMEGender-determining heredity unit
YCHROMOSOMEWhat makes a man a man
YCHROMOSOMEIt's a male thing
YCHROMOSOMEHe wouldn't be without it
YCHROMOSOMEMale characteristic
YCHROMOSOMEIt's a guy thing