ELUCIDATING THE LINKAGE OF BLOOD GROUPS WITH SELECTED HUMAN MORPHOGENETIC TRAITS IN DINDIGUL OF TAMILNADU ETHNICITY

Abstract

Study of the inheritance pattern of human traits is one of the significant methods for analyzing the genetic history of a population. It has an important role in the determination of the chance of occurrence of genetic traits in the family or in the society. Therefore an attempt was made to determine the relevance of blood groups and the morphogenetic traits such as height, weight, hitchhiker’s thumb, cleft little finger and handedness among 240 selected girl participants of three sampling sites in Dindigul town, Tamilnadu. On analysis, results revealed that the O+ve and B +ve blood group individuals were found to inherit more dominant traits such as height above 150 cm, weight below 55 kg, straight position of thumb, cleft less little finger and right handedness (R Pattern) which were found to be favourable characteristics in the sampled individuals. The prevalence of these dominant morphogenetic traits were registered as 71.6%, 65%, 70%, 78% and 81.6% were found to express more frequently in the population. The bent thumb, clefted little finger and left handedness (L Pattern ) which were found to be recessive traits were recorded in O-ve, B-ve, A+ve and A1+ve in higher incidence rate. The O-ve and B-ve blood group participants inherited many of the observed recessive traits. We conclude from our study that the expression of dominant and recessive characters may vary and depend on the interplay of multiple alleles and other genetic factors.