However, more recent studies have not been able to conclude an association between ABO blood groups with disease susceptibility or severity. Until recently it was thought that blood group A was associated with an increased risk of SARS-CoV-2 infection, while group O was associated with reduced susceptibility. Knowing the blood group is important because, depending on the one we have, we may be more or less predisposed to develop certain diseases. Does my blood type influence the incidence of illnesses such as Covid? In addition to this, there are other causes responsible for the variation observed in different blood group alleles at the molecular level for example, deletion of a gene or part of a gene or of one or more nucleotides. One or more SNPs in a particular blood group system can help identify alleles specific to that system. Single nucleotide polymorphisms (SNPs) are the main cause of variation in genes involved in defining blood type. Although the most reliable way to know your blood type is to have a biochemical blood test, during the last decades the genetics of the ABO Rh blood type has been detailed, and nowadays the blood type can be analyzed by genetic methods. With the tellmeGen DNA test you can know your blood group. ![]() People of group AB+ can receive blood from any group, which is why they are known as universal recipients. Group 0- is compatible with everyone, so people with this blood group are universal donors. How does my blood type influence my genetics?īlood group compatibility is crucial when donating or receiving blood from another person. Group 0 positive is the most frequent, especially among Hispanics, while Asians have a relatively high number of group B individuals, compared to the rest of the countries. Blood group A gives A types, B types B and group 0 types 0, with A and B groups being dominant over 0. The blood group, like most characteristics, is inherited from the parents. The Rh classification is characterized by: Therefore, the ABO classification is characterized by: These blood types are defined by the antigens that are attached to the red blood cells or erythrocytes in the blood. ![]() There are more than 30 blood type classification groups in humans, but the two most important are the ABO group and the Rh group because they affect the vast majority of the world’s population. Blood types are classified according to characteristics present in the outer layer of red blood cells and in the blood serum.
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