The phenotypical frequencies of the antigens of blood groups A, B, AB and O are respectively equal to 0.2254, 0.2386, 0.0472 and 0.4888. That of the rhesus D antigen is of 0.9594 for the Rh positive and 0.0406 for the Rh negative. The frequencies of the genes A, B and O in the population are 0.1470, 0.1548, 0.6983. These frequencies are not significantly varying between in the regions and among ethnics groups. They are close to those observed in the Subsaharan Africa region.
Source: Frequency of blood groups ABO and rhesus D in the Guinean population