Why do people had different blood groups?

Question

I am pretty sure it has got something to do with cromosones etc etc....
wouldnt the world...and blood donating (i donate Platelets) be an easier task

Michael

Answer 1

Each person is different from each other, and components of blood elements differ from each other. Everyone is genetically different from each other. That would be the simplest explanation. It is just the same like asking, why there are different races among the people.♥

Answer 2

The types of proteins, glycoproteins and glycolipids found (or expressed) on the surface of red blood cells define blood types. In addition, blood types, or at least the genes responsible for them, are inherited. Karl Landsteiner described the original blood types--A, B and O--in 1900 and doctors now recognize 23 blood group systems with hundreds of different "types." Many of the blood type antigens (and the antibodies that react with them) have been discovered as a result of transfusion incompatibilities. Some of these molecules have additional functions that are at least as important as conferring compatibility (of lack of compatibility) on transfusion recipients, however. The advent of sophisticated biochemistry and molecular biology has helped to characterize a number of these entities. Although it appears that the majority of the molecules are not essential for red cell function, some have specific functions on the red cell membrane such as allowing substances to enter and exit the red cell or binding certain substances to the cell surface.



For some blood types, evolution and environmental selective pressures are clearly important for their persistence. For example, the Duffy blood type includes a receptor that allows certain types of malarial parasites to enter the red cell.

Answer 3

Thank you for donating!

Yes, donating blood would be easier without genetics. Our cells have proteins and sugars attached to their surfaces and we rely on our immune system to recognize these cells and their attachments. Without this recognition, our immune system is designed to fight this unknown party. If this happens, we become ill. Our body fights itself.

We inherit the proteins and sugars from our parents. At this point, nothing is going to change this.

Please continue to donate. You are saving lives.

Answer 4

Blood types - their origin and function:

http://www.answersingenesis.org/tj/v11/i1/blood_types.asp