Published online by Cambridge University Press: 01 August 2014
Using Bansal & Rife's recent study (1962) as a working model, certain two-fold groupings of four palmar main lines and the axial triradii positioning have been proposed on the basis of the writer's unpublished work (1962). Some fairly encouraging penetrance figures suggest to apply the same groupings on twin data, on largest and richer family material drawn from the same Mendelian population, and to use other available methods of penetrance calculus, including one from concordance figures that is under investigation by the author.