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 other blood groups are tens of thousands of years old with B being more recent than A. The oldest group is either group A or one of the forms of group O. Why don't all humans have the same blood type? Do animals have blood types?
A is the most ancient - so-called wild type. That's what we call genes, the way they start before they begin to mutate and turn into things that exhibit selective survival advantages. So about five million years ago, this mutation pops up called group O. And around that time, and subsequently, group B developed.
The gene for blood group B first appeared in significant numbers somewhere around 10 to 15,000 B.C., the tail end of the Neolithic period, in the area of the Himalayan highlands now part of present day Pakistan and India.
Landsteiner and his colleagues later decided to change the name of blood type C to O in order to indicate that it is unique from the other blood types in that it lacks surface antigens.
Another example of Wikipedia's selective inclusion policy. 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.
From these early experiments, he identified three types, called A, B and C (C was later to be re-named O for the German “Ohne”, meaning “without”, or “Zero”, “null” in English). The fourth less frequent blood group AB, was discovered a year later.
Results: The Aboriginal and non-Aboriginal populations had significantly different ABO and RhD distributions (P < 0.001). For Aboriginal individuals, 955/1686 (56.6%) were group O and 669/1686 (39.7%) were group A. In non-Aboriginal individuals, 1201/2657 (45.2%) were group O and 986/2657 (37.1%) were group A.
Blood groups in Australia
O negative - 9% A positive - 31% A negative - 7% B positive - 8%
B positive is an important blood type for treating people with sickle cell disorder and thalassaemia who need regular transfusions. These conditions affect South Asian and Black communities where B positive blood is more common. There is currently a very high demand for B positive donations with the subtype Ro.
The most common blood type in Australia is O positive and the least common is AB negative.
Of the eight main blood types, people with Type O have the lowest risk for heart attacks and blood clots in the legs and lungs. This may be because people with other blood types have higher levels of certain clotting factors, which are proteins that cause blood to coagulate (solidify).
Chances are higher you'll live longer if you have type O blood. Experts think your lowered risk of disease in your heart and blood vessels (cardiovascular disease) may be one reason for this.
Blood type A is the oldest, and existed even before the human race evolved from our ancestors.
This means Neanderthal blood not only came in the form of blood type O – which was the only confirmed kind before this, based on a prior analysis of one individual – but also blood types A and B.
Rhnull, the Rarest Blood Type on Earth, Has Been Called the "Golden Blood" The extremely rare blood type is shared by only a handful of people on Earth. There are eight common blood types.
B Is for Balance - B Blood Type History
It first appeared in India or the Ural region of Asia among a mix of Caucasian and Mongolian tribes.
Genetic studies have revealed that Aboriginal Australians largely descended from an Eastern Eurasian population wave, and are most closely related to other Oceanians, such as Melanesians.
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.
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.
Since O is recessive, it's unlikely to become extinct without strong selection, and O variants can arise rather easily because anything that renders the ABO gene non-functional is an O.
Stowell, MD, an associate professor of pathology at Harvard Medical School in Boston. “But these findings do not demonstrate that blood group O individuals are protected from the virus.” Depending on the variant of the virus, the risk of infection may be 25 to 50 percent higher in type A cells versus type O cells.
Taken together, the authors concluded that type O and Rh-negative blood groups may be protective against SARS-CoV-2 infection and illness.