Blood Types Chart Percentage

December 29, 2020

Before the advent of dna sequencing and human leukocyte antigens typing blood type was the basis of paternity testing. Blood type b is more common in asians 25 and less common in latin americans and caucasians both at 9.

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Up to 53 of latin americans and 47 of african americans have blood type o.

Blood types chart percentage. Ab negative 0 6 percent and if you disregard the rh and rh blood type classification system and just look at o a b and ab blood types the most prevalent blood type in the us is blood type o 44 with blood type a at a close second 42. There are four major blood groups determined by the presence or absence of two antigens a and b on the surface of red blood cells. Group a has only the a antigen on red cells and b antibody in the plasma group b has only the b antigen on red cells and a antibody in the plasma group ab has both a and b antigens on red cells but neither a nor b antibody in the plasma.

In general the rarest blood type is ab negative and the most common is o positive. In this synopsis type a has the highest prevalence in europe and central europe type o has the highest prevalence in the americas type b and type ab have the highest prevalence in asia. The most common blood type among americans is o 38 percent.

Here s a breakdown of the most rare and common blood types by ethnicity according to the american red cross. Some blood types are more common in certain groups. This list concerns blood type distribution between countries and regions 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.

The listing of blood type percentages simply lists the continent where each blood type is the most common. Genes determine blood type abo as well as rh. Blood type b makes up only 10 of the population while blood type ab is the rarest at 4.

These antigens may be proteins carbohydrates glycoproteins or glycolipids depending on the blood group system. In comparison only 39 of asians and 37 of caucasians have this type. The least common is ab 1 percent.

Distribution of blood types.

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