For example: the reason why there is such a high level of Di(a) prevalence in the Polish population is likely because of a Mongolian invasion which occurred in the region centuries ago. Human movements can also be tracked when the history of Diego typing is considered during research. People of Polish descent have a 4x higher rate of Di(a) typing when compared to the rest of the Caucasian/White population.There are 21 identified antigens that can be tracked in Diego blood typing overall.More than half of the population of South American native tribal populations carries the Di(a) antigen.The Di(a) antigen is more commonly found in Oriental people of Mongolian descent, being more common in the Japanese and people from a Chinese descent.In the United States, the Di(a) antigen has not been found in Caucasian/White or Black/African-American blood donors.The Di(a+b+) is found in 10% of Asians.The most common Diego phenotype is Di(a-b+), which is found in over 99.9% Caucasians/Whites and Blacks/African-Americans.Yet there is also another blood typing method that is rarely discussed in general conversation that must also be considered when looking at these demographics. This may also provide evidence of how the human race has evolved over several generations as certain types tend to have more prevalence in specific groups – especially isolated groups. Yet there is still some level of variation since blood typing isn’t specific to the two parents. In some ways, human population histories can be tracked because of the geographic prevalence of certain blood types. The lowest known region is the Basque area between France and Spain, which has just a 65% Rh Positive blood factor in the population. Almost every region in the world has at least a 90% Rh Positive blood factor.Eastern Europe and Central Asia have the lowest levels of O Blood typing, but have the highest levels of the B blood allele in the world.63% of people do not have either the A allele or the B allele, with the highest prevalence of this being found in Central and Southern America.The Saami people of the Northern Scandinavia may have up to a 90% prevalence. This is particularly prevalent in the Australian Aboriginal population, which may have up to 53% prevalence of the A blood allele. When human population groups are isolated, there is a higher level of A blood allele levels.The A blood allele is somewhat more common in the world today than the B blood allele, with 1 in 5 people have the A blood allele.Because of these differences, it is important to make sure that you know what blood type demographic you fit into in case there is a need for medical treatment. Two parents with B type blood can have a child that has O type blood. The child of two AB+ parents could have a child with AB blood, A blood, or B blood and it could either be positive or negative. Just because both of your parents have AB Positive blood, however, doesn’t actually mean that is what your blood type will be. Your blood type is determined by your parents. When a blood donation is necessary, having a blood type match and an ethnicity match can lower the risks of a rejection occurring.98% of sickle cell issues with human blood originate from people with an African-American or Black ethnicity.Asians are more likely to be B Positive and AB Positive than any other ethnic group.Caucasians are more likely to be A Positive than any other ethnic group.53% of Hispanics in the US are believed to have O Positive as their blood type, making them the largest ethnicity with this type of blood.Caucasians are 2x more likely to have a negative Rh factor compared to any other ethnic demographic and 14x more likely to have a negative blood type when compared to people from an Asian ethnicity. Negative Rh factors are the rarest types of blood.The most common blood type in humans from all ethnicities is O Positive.Ethnicity And How It Affects Blood Typing
Based on these blood types, some basic demographic data can be collected about how our blood makes us the same, but also creates certain differences. AB blood is a universal donor for blood plasma. O blood is a universal donor for red blood cells and O Negative blood can be given to anyone, making it particularly valuable for blood donations. There are two types of universal donors when it comes to blood type. Each of these blood types is then assigned a positive (+) or negative (-) Rh value. There are 4 lettered blood types: A, B, AB, and O. The different typing is a reflection of the presence of antigens of the lack of them in certain combinations. This is despite the fact that human blood is made from the same basic elements in every person.
Humans have 8 basic blood types that are considered to be common.