Breasts were not examined in postpubescent females. Hair color, eye color, skin complexion, and freckling were recorded based on visual observation. Results The phenotypic characteristics of complexion, freckling, eye color, and hair color for the Hutterite children are presented in Table 1 . No significant relationships with total numbers of MN were found for any of these phenotypic characteristics. Table 2 presents the mean number of MN on total body, torso, and extremities by age for the Hutterite children and on the total body for non-Hutterite children.
Extremities refer to the children's head, neck, arms, and legs.
Torso refers to all their remaining body parts. The number of nevi increased with age in both groups. On average boys had 2.70 nevi compared with 1.92 for girls. In the present study, mean numbers of total body nevi in fair-skinned Hutterite children were markedly lower than values previously reported for white children. Nicholls 1 found a mean of 16.36 nevi in Australian children aged 5 to 16 years.