American International Journal of Research in Formal, Applied & Natural Sciences
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Distribution of ABO and Rh (D) Allele Frequency among Five Endogamous Groups of Haryana, India Manisha Saini1 & Abhay Singh Yadav2 Junior Research Fellow (HSCST), Human Genetics Laboratory, Department of Zoology, Kurukshetra University, Kurukshetra, India 2 Professor, Human Genetics Laboratory, Department of Zoology, Kurukshetra University, Kurukshetra, India 1
Abstract: The present study was intended to investigate the distribution of ABO and Rh (D) allele frequencies in five endogamous groups of Haryana (Bishnoi, Sunar, Nai, Gujjar and Kamboj). The frequency of allele A ranges from 0.09- 0.31 while of allele B varies from 0.18- 0.45 and of O varies from 0.35- 0.72. In Rh (D) blood group system the frequency of allele d varies from 0.24- 0.37 while the frequency of allele D ranges from 0.63 – 0.76. The frequency range of all the alleles studied falls well within the range of other populations of Haryana. Keywords: ABO, Rh blood groups, allele frequency, endogamous groups
I. Introduction Haryana is a state of mixed populations because of continuous migrations and mixing. It is situated in north-west region of India. There are 82 communities identified in Haryana [1]. Although these communities are quite widely distributed yet only infrequent studies are available regarding the distribution of ABO and Rh (D) blood groups in different endogamous groups of Haryana [2]-[18]. Knowledge of blood group systems is important in management of provincial blood bank and transfusion services and also in presenting insight into potential of future burden of diseases and helps to take precautionary measures against it. The present study was planned to investigate the distribution of ABO and Rh (D) blood groups in five endogamous groups belonging to Haryana (Bishnoi, Nai, Sunar, Gujjar and Kamboj). II. Materials and methods Sample collection and analysis Blood samples were collected by finger-prick method from 1000 healthy, unrelated individuals of both sexes belonging to Bishnoi, Sunar, Nai, Gujjar and Kamboj populations of Haryana. All of these communities belong to backward class of Haryana and samples were collected from Gurgaon, Karnal, Panchkula, Kurukshetra, Kaithal, Rohtak and Jind district of Haryana. ABO and Rh (D) blood grouping was performed simultaneously. Slide agglutination method was used for the present investigation. A drop of each antisera-A, antisera-B and antisera-D was placed on to a clean, labeled glass slide and a drop of blood was added and mixed immediately. Agglutination with antisera-A showed A blood group, with antisera-B showed B blood group and with both A and B showed AB and with neither of these showed O blood group. Agglutination of blood with D showed positive test for D antigen. Statistical Analysis Allele frequencies of ABO blood group system were calculated according to Yasuda [19] and d allele frequency was calculated by square root method. Statistical calculations were done using chi-square test. III. Results Table 1 represents the phenotypes and allele frequencies of ABO blood groups. In ABO blood group system, the frequency of A allele was found to be highest in Nai (0.31) and lowest in Bishnoi (0.09). Gujjar (0.45) has the highest frequency of B allele while Bishnoi (0.18) has the lowest B allele frequency. The allele frequency for O blood group was found to be highest in Bishnoi (0.72) followed by Sunar and Kamboj (0.49), Gujjar (0.40) and lowest in Nai (0.35). Chi-square value for ABO blood groups was significant only in Gujjar population group indicating heterogeneous distribution and the remaining population groups showed nonsignificant differences demonstrating homogenous distribution. The phenotype and gene frequencies of Rh (D) blood group are given in table 2. The gene frequency of D allele was found to be maximum in Bishnoi (0.76) and minimum in Sunar (0.63). Frequency of allele d was highest in Sunar (0.37) followed by Gujjar (0.28), Nai and Kamboj (0.26) and lowest in Bishnoi (0.24).
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