What determines what a blood -type person has?

As part of the common ABO blood writing process, it can be a blood type of person A, B, AB or O. It is very important that people know their own blood type, as well as their husband and children. Important decisions on emergency blood transfusions may be necessary to quickly make, so having this information at hand for medical experts can shave rare minutes after the initial sorting process. The blood type of man is mainly determined by genetics and does not change during his life. A simple blood writing test can literally perform anywhere through the use of specially treated test cards.

One of the main factors that determines the blood type is family genetics. The child receives separate sources of genetic code, called alleles, from each parent at the time of conception. One of the alleles located on Chromosome 9 contains the exact type of donor parent and is classified as A, B, AB or O. Another IS factor called Rhesus Factor, which could be positive or negative. Real blood type dThe kit is determined by the dominant type between the two parents. A A B are dominant above o, which means that the child she receives and from the father and the mother will have type of type A.

They are then considered to be codominant, which means that the child will inherit and from the mother and B from the father will most likely have a blood type AB. Only two recessive genes O from both parents will lead to a child that has a type O. The negative blood type is considered a universal donor because it contains nothing that would seem alien to someone else's blood. Those with a positive type A or B must not receive blood infusions of the opposite type, because the natural defense of the body attacks incoming blood cells, as well as any other infections.

The

and the perspective type ON is determined by a simple ABO test available in the doctor's office, blood donation or even through pharmacies. A drop of blood is placed on two separate testsCircles labeled A and B. If blood responds to circle A but not to circle B, then the blood type is considered to be A. The reaction to both circles indicates the AB type, while complete unrealistic on one circle denotes o o. The reaction is caused by chemicals on the card coming into contact with type A or type B on the red blood cell surface.