Simian crease polymorphism among fifteen Iranian endogamous groups.

In palm prints of 3266 individuals from 15 Iranian endogamous groups the palmar crease types were analysed using the simian crease classification proposed by Bhanu (1973). There is little evidence of differences between sexes or hands. The range of variations among the populations is considerable, not only in the pattern frequency, but also in the lateral symmetry. Comparisons with other populations show that the frequencies of the transitional and simian crease types tend to be low in Iranian populations.