Absent d triradius and dotting of the ridges in siblings.
Absent d triradii were found in 2 sibs of a family of African ancestry. 1 of the sibs exhibited not only bilateral absence of d triradius but also bilateral absence of axial triradii. The other sib lacked d triradius in the left palms. All 5 sibs of the sibship showed, to some degree, dotting or dissociation of the ridges. The present results support the suggestion of genetic transmission of both absent d triradius and dotting of the ridges.
D000349:Africa / Q000208:ethnology; D002648:Child; D002675:Child, Preschool; D003878:Dermatoglyphics; D005260:Female; D005826:Genetics, Medical; D006801:Humans; D008297:Male; D010375:Pedigree; D014481:United States