Formulation of Longitudinal Flexion Creases: Validation of Inheritance, Twin Diagnosis and Ethnic Variation

In the palm there are three longitudinal and two transverse creases are present. The longitudinal creases are present on thenar, central and hypothenar area, while the transverse are distal and proximal crease. Here an attempt is made to formulate new classification of tranverse flexion creases their validation of inheritance, twin diagnosis and ethnic variation. This classification is more effectively applied in the study of ethnic variations etc. For the validity of the classification 100 families of Gonds and 126 pairs of twins (including di-zygotic and mono zygotic) were investigated simultaneously, the formulation is tested through the study of two populations i. e. , Kacchis and Gonds 150 males and 150 females, unrelated individuals were selected from each group, from Sagar district, Madhya Pradesh, India. The results exhibit inheritance and ethnic variation.