A genetic analysis of the normal body-height growth and dental development in man.

A twin and family study on the significance of genetic factors for the variation in certain new variables of dental and body-height development is presented. Evidence of a rather strong genetic regulation of most of the variables was obtained from the analysis of the twins and sibs. The data on cousins did not allow any definite conclusions, and it was not possible to obtain a parent--offspring material. Therefore, the study did not give any information concerning the relative significance of additive genetic variation.