Blood Types World Map

While there are only eight main common blood types there are an additional 61 possible antigens in the rh system which means that the eight main blood types can be subdivided into millions of different blood types.

Blood types world map. This list concerns blood type distribution between countries and regions. The fol low ing map shows the dis tri b u tion of the o a b and ab blood types in the pop u la tion by coun try in eu rope with colour ing in di cat ing the most com mon type which in it self is not a re li able in di ca tor of any thing else. This can be seen with the global frequency patterns of the type b blood allele shown in the map below. Because rh null lacks all of the possible antigens it can be donated.

Rh null occurs when a person s blood lacks all of the 61 possible antigens. Blood type also called a blood group is a classification of blood based on the presence and absence of antibodies and inherited antigenic substances on the surface of red blood cells rbcs. Scandinavians have a high probability of carrying the a blood type while those indigenous to central asia are more likely to carry the b blood type. T he a blood allele is somewhat more common.

Abo and distribution by country. Rh null aka golden blood is the rarest blood type in the world with fewer than 50 43 to be exact known cases ever reported. Distribution of the b type blood allele in native populations of the world the a blood allele is somewhat more common. The o blood type is the most common blood type around the world.

Overall in the world b is the rarest abo blood allele. Only 16 of humanity have it. The presence or absence of a b and rh d antigens define the eight most commonly used blood types. Relevant discussion may be found on.

Below is a chart showing blood types a b ab o and rh rhesus status rh positive and rh negative by country. This section s factual accuracy is disputed. If you don t know your type ask your doctor midwife. Distribution of the b type blood allele in native populations of the world.

Typically when blood is drawn at an early prenatal visit your blood will be tested to determine both blood type and rh factor. The most common blood types are a or o. Health professionals categorize blood types based on whether or not the blood contains specific antigens and antibodies. These antigens may be proteins carbohydrates glycoproteins or glycolipids depending on the blood group system.

Note that it is highest in c entral asia and lowest among the indigenous peoples of the americas and australia. However there are relatively high frequency pockets in africa as well. This can be seen with the global frequency patterns of the type b blood allele shown in the map below. Overall in the world b is the rarest abo blood allele.

The distribution of blood types varies by location and genetic background but most people around the world have type o blood. Blood types around the world blood types vary depending on the geographical region. Note that it is highest in central asia and lowest among the indigenous peoples of the americas and australia. He produced a series of eight world maps each showing the prevalence of a blood type a a b b ab ab o and o in various countries around the world.