It is possible to be AA, AO, OO, BB, BO, The type of blood is the presence of a part.
AA and AO will both test as A.
If you consider the presence of the rh factor it can add RR, Rr, rr.
Parents who are both AA will all have children that are A.
Parents that are AO or BO can have children either A, B, AB, or O
ABO is determined by ONE gene and THREE alleles :)
There are three alleles.Co dominant A & B & recessive allele.
ABO blood group
ABO blood types are controlled by codominance and multiple alleles.
The human ABO blood group system is a good example of multiple alleles. There are three alleles involved: IA, IB and IO. If a person inherits two IA alleles, or IA and IO, they will be group A. If they inherit two IB alleles, or IB and IO, they will be group B. If you inherit two IO alleles you will be group O.
The presence of more than two alleles that control a trait is called multiple allele. An example of this is the group gene of ABO blood that has three alleles.
ABO stands for a well-known blood group series, and these letters also are the initials of a great many organizations.
abo blood group
ABO blood group
each parent contributes only one allele for the ABO blood group to the offspring
* Type A alleles could be : IAIA or IAi* Type B alleles could be : IBIB or IBi* Type AB alleles : IAIB* Type O alleles : ii
The presence of more than two alleles that control a trait is called multiple allele. An example of this is the group gene of ABO blood that has three alleles.
ABO blood types are controlled by codominance and multiple alleles.
The ABO blood groups in humans are controlled by multiple alleles.
The human ABO blood group system is a good example of multiple alleles. There are three alleles involved: IA, IB and IO. If a person inherits two IA alleles, or IA and IO, they will be group A. If they inherit two IB alleles, or IB and IO, they will be group B. If you inherit two IO alleles you will be group O.
A multi-allele trait is one that is governed by more than two alleles. One example is the human ABO blood group. There are three alleles, A, B, and O. A person can, however, only inherit two of the three alleles.
In the case of multiple alleles, one trait is governed by more than two alleles. One example is the human ABO blood group. There are three alleles, A, B, and O. A person can, however, only inherit two of the three alleles.
The presence of more than two alleles that control a trait is called multiple allele. An example of this is the group gene of ABO blood that has three alleles.
ABO stands for a well-known blood group series, and these letters also are the initials of a great many organizations.