MN Bloodtype data

MN Blood Group system in Humans

    The MN blood group system is under the control of an autosomal locus found on chromosome 4, with two alleles designated LM and LN. The blood-type is due to a glycoprotein present on the surface of red blood cells, which behaves as a native antigen. Phenotypic expression at this locus is co-dominant because an individual may exhibit either one or both antigenic substances. Frequencies of the two alleles vary widely among human populations: note variation in the data above by continent of origin. Note also that although Australian Koori differ markedly from Arctic Inuit, Inuit are similar to southwestern Diné (Navajo).

    Carr (2021) describes additional MN data from various populations in the Philippine Islands, based on the original presentation by Arcellana et al. (2011).


Data after © 1950 by WC Boyd, with additions; Text material © 2022 by Steven M. Carr