Preliminary communication: hairy tip of nose--a new trait in males

Hairy nose tip (HNT) is reported here to be another male sex-limited trait in man. Out of 1,220 females examined, none demonstated the trait, whereas the male population frequency is estimated to be 7.35%. The age of onset is 16 years, with a greater prevalence in the age group 46-55, and declining frequency after age 55. Pedigree data do not allow discrimination among several genetic hypotheses.