How many different blood groups do humans have?

Question

Please also provide any other relevant information about different blood groups.

Answer 1

Everybody has a blood type. The most common blood type classification system is the ABO (say "A-B-O") system discovered by Karl Landsteiner in the early 1900s. There are four types of blood in the ABO system: A, B, AB, and O. Your blood type is established before you are born, by specific genes inherited from your parents. You receive one gene from your mother and one from your father; these two combine to establish your blood type. These two genes determine your blood type by causing proteins called agglutinogens (a-GLOO-tin-a-gins) to exist on the surface of all of your red blood cells.

There are three alleles or versions of the blood type gene: A, B, and O. Since everybody has two copies of these genes, there are six possible combinations; AA, BB, OO, AB, AO, and BO. In genetic terms, these combinations are called genotypes, and they describe the genes you got from your parents.

In addition to the proteins (agglutinogens) existing on your red blood cells, other genes make proteins called agglutinins (a-GLOO-tin-ins) that circulate in your blood plasma. Agglutinins are responsible for ensuring that only the blood cells of your blood type exist in your body.

Your genotype determines your blood type.
The agglutinogen produced by the O allele has no special enzymatic activities. However, the agglutinogens produced by the A and B alleles do have enzymatic activities, which are different from each other. Therefore people whose genotype is OO are said to have type O blood, meaning the agglutinogen on their red blood cells doesn't have any enzymatic activity. People with Type O blood have agglutinins a and b in their blood plasma. Agglutinin a helps the body destroy any type A blood cells that might enter the circulation system. Agglutinin b helps the body destroy any type B blood cells that might enter the circulation system.

People who have an AA genotype are said to have type A blood because the agglutinogen on their red blood cells has the enzyme activity associated with the A allele. It is important to recognize that people with the AO genotype also have the enzyme activity associated with the A allele, so they are also said to have type A blood. (Remember the O allele doesn't have any enzyme activity associated with it!) People with Type A blood have agglutinin b in their blood plasma. Agglutinin b helps the body destroy any type B blood cells that might enter the circulation system.

Likewise, people with the BB and the BO genotypes are said to have type B blood. These people have agglutinin a in their blood plasma. Agglutinin a helps the body destroy any type A blood cells that might enter the circulation system.

People who have the AB genotype have the enzyme activity associated with both the A and B alleles. These people have no agglutinins in their blood plasma.

The concepts of genotype and phenotype can be easily understood in the case of blood type. Genotype refers the actual genes an individual possesses that determine a particular trait. Phenotype refers to the characteristics of that trait an individual displays. In the case of blood type, both the AA and AO genotypes cause individuals to display the A blood type phenotype. Similarly, both the BB and BO genotypes cause individuals to display the B blood type phenotype. Individuals who are phenotypically type O or type AB have only one possible genotype, OO and AB, respectively.

In different parts of the world, the fraction of individuals with blood type A, B, O, or AB differs. The frequency with which blood types are observed is determined by the frequency with which the three alleles of the ABO gene are found in different parts of the world (allele frequency). Variation in the allele frequency at the ABO gene reflects the social tendency of populations to marry and reproduce within a national, regional, or ethnic group. As people throughout the world intermingle to a greater extent, the distribution of the different blood types will become more uniform throughout the world.

Answer 2

How Many Blood Types

Answer 3

There are basically 4
O universal donor
AB universal recipient
A
B
they may be given a positive or negative in terms of the presence of an antigen Rh factor. Positive if present and negative if not.So blood groups are read as A+ or O-...

Answer 4

Blood Type
There r 4 types of blood grouping types known as A, B, AB, and O. Blood group A contains red blood cells that have a substance A on it. This blood contains an antibody directed against substance B, found on the red cells of persons with blood type B. Type B blood contains the reverse combination. Serum of blood type AB contains neither antibody, but red cells in this type of blood contain both A and B substances. In type O blood, neither substance is present on the red cells, but the individual is capable of forming antibodies directed against red cells containing substance A or B. If blood type A is transfused into a person with B type blood, anti-A antibodies in the recipient will destroy the transfused A red cells. Because O type blood has neither substance on its red cells, it can be given successfully to almost any person.person having 'o' is universal donor Persons with blood type AB have no antibodies and can receive any of the four types of blood; and AB are called universal recipients,

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Answer 5

8

Answer 6

There are four types of blood groups. A, B, AB, and O.
A: Antigen A, Antibody B
B: Antigen B, Antibody A
AB: Universal Acceptor
O: Universal Donor

Answer 7

This Site Might Help You.

RE:
How many different blood groups do humans have?
Please also provide any other relevant information about different blood groups.

Answer 8

Humans have 4 Normal blood groups and 1 special.
1.A:person has B antigen in his blood
2.B:per sen has A antigen in his blood
3.AB:per sen have not anti gen in his blood
4.O:per sen have A&B antigen in his blood
****If persen,s blood is (+) hi has RH factor If persen,s blood is(-)
hi has not RH factor in his blood(on the bloods gloobools)
1spesial is OH (Bambai) and it is unknown & verry unkommon .
we can use anticores for assigning blood groups{forA , B/forB , A/for O , A&B/for AB , ....noone
thank you for your time.

Answer 9

They are A+,A-,B+,B-,AB+,AB-,O+,O-.AB can recieve all blood groups.Its Universal reciever n O s Universal donor means they cn giv blood to anyone.Rh s a bood factor which was found n Rhesus Monkey n is very harmful for humans.

Answer 10

the common ones are A, B, or O
eg:A, B, O, AA, BB, AB, AO, BO, or OO

theres also a rare type of blood known as Bombay, of Oh, sometimes only known as H.a few years back, in a book i read, stated there are only 3 ppl found with this type of rare blood

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