ABO & Rhesus Antigens and Phenotypes and Their Frequencies in Guraan Ethnic Group

Abstract

The antigen and phenotype frequencies of ABO and Rhesus blood groups were determined in Guraan ethnic group. Blood group O was found to be the most frequent (37%). The frequency of blood group A was 36%, for group B 22% and for group AB 5%. In Rhesus blood grouping system the frequency of Rh (D) positive was 93%. With respect to both ABO and Rh (D) positive prevalence of group A along with Rh (D) positive was 34%, group O+ve was 34% , B+ve 20% and AB+ve was 5%.The frequencies of other Rh antigens were e 99%, c 94%, C 37% and E 12%. The Rh phenotype frequency was ccDee 47%, CcDee 32%, ccee 7%, ccDEe 6%, CcDEe 5%, CCDee 2% and ccDEE 1%.The trend can be shown with a general formula O>A>B>AB. Group A (37.9%, 35.2% respectively), B (31%, 18.3% respectively) and AB (6.9%, 4.2% respectively) were more frequent in females as compared to males. In contrast blood group O was more prevalent in males (42.3%) as compared to females (24.1%). There was a real predominance of blood group O over the blood groups A, B and AB as well as Rh (D) positive over Rh (D) negative. Predominance of blood group A in females was also reported. e antigen (100%, 96.6% respectively) and C antigen (40.8%, 27.6% respectively) were more frequent in males than in females while, in contrast, c antigen (96.6%, 93% respectively) and E antigen (17.2%, 9.9% respectively) were more frequent in females than in males. The Rh phenotype CCDee (28%) in males, but absent (0%) in females. In contrast the Rh phenotype ccDEE (3.4%) in females, but absent (0%) in males.