Is the blood type A positive a rare blood type?
477790
Nope. A pos/neg and B pos/neg are the two most common blood types.\n\nAB pos/neg is the next most common (meaning one parent has A blood, and the other has B blood)\n\nO pos/neg is the rarest.
628175
hi: unfortunately the only way of finding out what blood type you are is by a simple blood test which a dr has to \norder on a requistion(piece of paper that tells the lab technician that takes your blood what tests the dr wants). \nit doesn't have to be done by your doctor only.. you can \ngo to any walk-in clinic in your neighbourhood and tell them\nyou want to know what type you are.. i am a lab technican
31990
No this combination is not possible. Blood type is a combo of one of each parent's alleles.  Therefore an O could produce an A with an AB or A mother or a B with an AB or B mother, but not an AB.  Please use the link to calculate.
556328
Yes.  Your child may be A+, O+, A-, or O-.  The + part of the blood type is dominant to -.  You and your husband would have to each have a + from one parent and a - from the other parent in order for your child to receive 2 - genes and have rh- blood.  Having a different bloodtype than your child can lead to serious complications, especially during the second pregnancy.  If during the birth of your first child, your body is exposed to your baby's blood (and the blood is a different type than your own), you may build up antibodies to your baby's blood.  If your next child has the same bloodtype as your first child, your body may actually attack the baby.  Be sure to talk to your doctor about bloodtype dangers.
175998
yes, but more than just blood type. They do something called a tissue-type test to measure compatibility & therefore, chance of rejection. The link gives more info
1058331
Different blood types are formed with evolution:\n\nEvolutionary biologists theorize that the IA allele evolved earliest, followed by O (by the deletion of a single nucleotide, shifting the reading frame) and then IB. This chronology accounts for the percentage of people worldwide with each blood type. It is consistent with the accepted patterns of early population movements and varying prevalent blood types in different parts of the world: for instance, B is very common in populations of Asian descent, but rare in ones of Western European descent.)\n\nAs for other mammals:\n\nThe ABO system is the most important blood type system in humans. The associated anti-A antibodies and anti-B antibodies are usually powerful IgM antibodies. ABO IgM antibodies are produced in the first years of life by sensitization to environmental substances. ABO blood types are also present in other apes such as chimpanzees, bonobos and gorillas.
1139472
Rh + is dominant, - is recessive; the A blood type can be either homozygous or heterozygous (its multiple allelles), so babies could be O+ or O-, A+ or A-.
38817
So not universal, but definitely most common, by a huge margin.\n\nUniversal would suggest everywhere, and its not true, there is of course AB, A and B blood types also.\n\nYou may be mixing up the term "universal donor", Type O-negative blood does not have any antigens. It is called the "universal donor" type because it is compatible with any blood type. Type AB-positive blood is called the "universal recipient" type because a person who has it can receive blood of any type. Although “universal donor” and “universal recipient” types are occasionally used to classify blood in an emergency, blood type tests are always done to prevent transfusion reactions.
189212
Yes.\n\nThis site talks about blood groups in cattle:\n\n"Eleven blood groups have been recognised in cattle - some are simple with only one antigen presented, whilst others are more complicated"\n\nWhat, you thought humans would be unique? =)
99315
RH Factor:\nAn antigen present on the red blood cells of about 85% of people. Called Rh because it was first identified in the blood of rhesus monkeys. Persons with the factor are designated Rh-positive, those lacking the factor are designated Rh-negative.\n\nABO System:\nABO blood group system: a classification system for the antigens of human blood; used in blood transfusion therapy; four groups are A and B and AB and O
433957
A and B blood types are both dominant, so each parent could potentially be A0, and B0, meaning the children could be any combination of A,0 and B, 0, so: AB, A0, 0B, or OO.  The kid could be blood type A, B, AB, or 0.
797469
Your genotype determines your blood type before your born. 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 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. 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. People with the BB and the BO genotypes are said to have type B blood. 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.  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. Hopefully that helps a bit!
558329
yes\n\none parent is blood type A+, and the other is B+.\n\nTherefore, can be represented as AO, and BO.\n\nin this way, it is possible to have an AB, AO, BO, and OO blood type, more commonly known as AB, A, B, and O
719142
It's a genetic variation like eye colour or skin tone.  \nSome specific diseases do not affect certain blood types and thus it seems like differnt blood types have evolved to combat these diseases.\n\n(I am A positive by the way)
427028
The differences in human blood are due to the presence or absence of certain protein molecules called antigens and antibodies. The antigens are located on the surface of the red blood cells and the antibodies are in the blood plasma. Individuals have different types and combinations of these molecules. The blood group you belong to depends on what you have inherited from your parents.\n\nThere are more than 20 genetically determined blood group systems known today, but the AB0 and Rh systems are the most important ones used for blood transfusions. Not all blood groups are compatible with each other. Mixing incompatible blood groups leads to blood clumping or agglutination, which is dangerous for individuals.\n\nNobel Laureate Karl Landsteiner was involved in the discovery of both the AB0 and Rh blood groups.\n\nCheck the full text\n\nhttp://nobelprize.org/medicine/educational/landsteiner/readmore.html
563817
A, B, and O are the names of specific marker proteins on the blood cells.  A and B are with protiens and O is without.  Positive is indicative of yet another protein, and negative means you don't have it.  The body uses these proteins to identify the cell as 'self', to make sure it isn't a germ.  O negative blood can be accepted by anyone because it does not have any of the proteins that the body would call 'other' and attack.  It is the 'neutral' blood type. The big problem with this, though, is that people with O negative blood can only receive O negative because thier bodies would reject anything else.
1115203
Can a man have, let's say, B+? Yes.\nCan a woman have, let's say, B+? Yes.\nCan they get married? Yes.\n\nExact same blood type will not be a problem. Only way for problem is if baby is + and mom is -. Only way for that to happen is if Dad is + and mom is -.