Acuity of selective mechanisms operating on ABO, Rh, and MN blood groups. 1987

C R Srikumari, and J Rajanikumari, and T V Rao

Selection in ABO, Rh, and MN blood groups was studied in 216 matings and their children in an endogamous population. Incompatibility status with respect to these three systems was considered simultaneously. There is no effect of incompatibility on number of pregnancies. Analysis of variance between groups confirms that prenatal loss is associated with incompatibility, and it is greater when the matings are incompatible for any two systems. There is no significant intergenerational change in ABO and Rh polymorphisms. Segregation analysis for the ABO system suggests that there is no significant difference in the proportion of A, B, and O children, based on the compatibility of the parents, while analysis for Rh-D system showed a segregation distortion which is not related to the known antigenic specificities (mother-child incompatibility).

UI MeSH Term Description Entries
D007194 India A country in southern Asia, bordering the Arabian Sea and the Bay of Bengal, between Burma and Pakistan. The capitol is New Delhi. Republic of India
D008297 Male Males
D008951 MNSs Blood-Group System A system of universal human blood group isoantigens with many associated subgroups. The M and N traits are codominant and the S and s traits are probably very closely linked alleles, including the U antigen. This system is most frequently used in paternity studies. Blood-Group System, MNSs,Blood-Group Systems, MNSs,MNSs Blood Group System,MNSs Blood-Group Systems,System, MNSs Blood-Group,Systems, MNSs Blood-Group
D011247 Pregnancy The status during which female mammals carry their developing young (EMBRYOS or FETUSES) in utero before birth, beginning from FERTILIZATION to BIRTH. Gestation,Pregnancies
D005006 Ethnicity A group of people with a common cultural heritage that sets them apart from others in a variety of social relationships. Ethnic Groups,Nationality,Ethnic Group,Nationalities
D005260 Female Females
D006648 Histocompatibility The degree of antigenic similarity between the tissues of different individuals, which determines the acceptance or rejection of allografts. HLA Incompatibility,Histoincompatibility,Human Leukocyte Antigen Incompatibility,Immunocompatibility,Tissue Compatibility,Compatibility, Tissue,HLA Incompatibilities,Histocompatibilities,Histoincompatibilities,Immunocompatibilities,Incompatibility, HLA,Tissue Compatibilities
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000017 ABO Blood-Group System The major human blood type system which depends on the presence or absence of two antigens A and B. Type O occurs when neither A nor B is present and AB when both are present. A and B are genetic factors that determine the presence of enzymes for the synthesis of certain glycoproteins mainly in the red cell membrane. ABH Blood Group,ABO Blood Group,ABO Factors,Blood Group H Type 1 Antigen,H Blood Group,H Blood Group System,ABO Blood Group System,Blood Group, ABH,Blood Group, ABO,Blood Group, H,Blood-Group System, ABO,Factors, ABO,System, ABO Blood-Group
D000328 Adult A person having attained full growth or maturity. Adults are of 19 through 44 years of age. For a person between 19 and 24 years of age, YOUNG ADULT is available. Adults

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