Download Blood Type O And Blood Type A Offspring Gif. The blood types are a, b, ab and o. In order to be type ab, you must have one a and one it also cures many types of health issues as like.

The abo group system for blood typing is based on which.

Blood typing is a test done to work out which blood type you have, or which blood group you belong to. Type o is the most common in humans as well, but those with it can only receive type o. There are eight main blood types, organised through two combined systems. In order to be type o, both of your genes must be o.