All That Matters | Which Is The Most Common Blood Group @lookskewl087 | Uploaded 7 years ago | Updated 3 hours ago
Which Is The Most Common Blood Group

There are 4 main blood groups A, B, AB and O, of which group O is the most common (47% of population). The blood type is determined by proteins called antigens found on the surface of red blood cells. If you have the antigen A on the red blood cells then you have got type A blood.