What ethnicities have type O blood?
Broken down by race, type O-'s prevalence is 37% among Caucasians, 47% among African Americans, 39% among Asians, and 53% among Latino-Americans, according to the American Red Cross.
Africa. O+ is a strong blood group classification among African countries. Countries like Ghana, Libya, Congo and Egypt, have more individuals with O- blood types than AB+.
Certain blood types are unique to specific racial and ethnic groups. Therefore, it is essential that donor diversity match patient diversity. For example, U-negative and Duffy-negative blood types are unique to the African American community.
Distribution of blood types in the U.S. as of 2021, by ethnicity. The most common blood type among the population in the United States is O-positive. Around 53 percent of the Latino-American population in the U.S. has blood type O-positive, while only around 37 percent of the Caucasian population has this blood type.
All major ABO blood alleles are found in most populations worldwide, whereas the majority of Native Americans are nearly exclusively in the O group. O allele molecular characterization could aid in elucidating the possible causes of group O predominance in Native American populations.
The founding population of the Americas was relatively small so the high frequency of blood type O is just due to chance in a small population. This is classic random genetic drift.
Irish Blood Group Type Frequency Distribution
Blood group O Positive is the most common group in Ireland while AB negative is the least common.
Only one Neanderthal's blood had been typed in the past, and was found to be type O under the ABO system used to classify the blood of modern humans. Since all chimpanzees are type A, and all gorillas are type B, it was assumed that all Neanderthals were type O.
Most common blood type by ethnicity
African American: 47% O-positive, 24% A-positive, and 18% B-positive. Latin American: 53% O-positive, 29% A-positive, and 9% B-positive. Asian: 39% O-positive, 27% A-positive, and 25% B-positive. Caucasian: 37% O-positive, 33% A-positive, and 9% B-positive.
Although type O comes from a recessive gene—if one parent has A or B blood, the child will be A or B—O is the oldest type, reports the BBC. A and B types only emerged in the last 20,000 years or so, and are still spreading.
What diseases are blood type O prone to?
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Diseases more common in people with type O were:
- familial Mediterranean fever.
- systemic lupus erythematosus.
- systemic sclerosis.
- Sjögren's syndrome.
O positive red blood cells are not universally compatible to all types, but they are compatible to any red blood cells that are positive (A+, B+, O+, AB+). Over 80% of the population has a positive blood type and can receive O positive blood. That's another reason it's in such high demand.
The most important or identifiable haplogroup for Vikings is I1, as well as R1a, R1b, G2, and N. The SNP that defines the I1 haplogroup is M253. A haplogroup is a group of similar haplotypes that share a common ancestor.
In molecular history, type A appears to be the 'oldest' blood type, in the sense that the mutations that gave rise to types O and B appear to stem from it. Geneticists call this the wild-type or ancestral allele.
The founding population of the Americas was relatively small so the high frequency of blood type O is just due to chance in a small population. This is classic random genetic drift.
Type B from one parent and type O or another type B gene from the other parent will give you type B blood. But inherit an A gene from one parent and a B from the other and you have AB type blood. Those with type O blood have inherited the O gene from each parent.
