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fetal hemoglobins
First, let me point out that there are 32 blood-group systems identified in the human. Each of these can affect the outcome of a cross-match for a blood transfusion. However, it would be too confusing to identify yourself as a 32 part blood type, so we limit it to the two most important antigens/genes which are the ABO gene and Rh factor.
The usually identified blood types are:
- phenotye: Type A pos = genotype: AA or AO with Rh factor (++) or (+-)
- phenotye: Type A neg= genotype: AA or AO with Rh factor (--)
- phenotye: Type B pos = genotype: BB or AO with Rh factor (++) or (+-)
- phenotye: Type B neg = genotype: BB or AO with Rh factor (--)
- phenotye: Type O pos = genotype: OO with Rh factor (++) or (+-)
- phenotye: Type O neg = genotype: OO with Rh factor (--)
- phenotye: Type AB pos = genotype: AB with Rh factor (++) or (+-)
- phenotye: Type AB neg = genotype: AB with Rh factor (--)
Therefore, there are 4 ABO blood types combined with 2 Rh factors, for a total of 8 blood types that can easily be identified with a blood mixing kit.
Wiki User
∙ 10y ago
Wiki User
∙ 7y agoThe commonly known blood types, ABO is controlled by 2 genes from each parent and Rh is controlled by 1 gene from each parent, making a total of 3 genes from each parent.
However there are 31 additional known "minor" blood types, each controlled by 1 or more genes each from each parent.
There are likely even more unknown "minor" blood types, each controlled by an unknown number of genes from each parent.
Wiki User
∙ 10y agoThe 3 alleles of the ABO gene are A, B and O.
They produce the 4 ABO blood types: A, B, AB and O.
The resulting genotypes are AA/AO, BB/BO, AB and OO.
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Blood type in humans is determined by a single gene that has multiple alleles?
Each person has two alleles for their blood type, one dominant and one recessive. Except for type AB blood where the alleles are co-dominant. The allele for O blood is always recessive when paired with either an A or B allele.
How many genes control blood type?
The genes for the others work in similar fashions, though certainly not all have three alleles. The other aspect of blood type which is of most interest to us is the Rh factor. Genetically, this is much simpler than the ABo system. It has only two alleles, one dominant (Rh-positive) and one recessive (Rh-negative).
What are 3 blood alleles?
simply put. A B and O two copies of each allele per person. blood type a = ia ia OR ia io blood type b = ib ib or ib io Blood type o = io io Blood type AB = ia ib
What is the blood type of person who is heterozygous having A and B alleles codominant?
Blood types is a good example of codominance. There are three alleles for blood type, that can be represented as IA, IB, and i. IA and IB are both dominant to i, but when an individual inherits one of each the former two alleles (IAIB), he or she will have type AB blood. Instead of one allele being straightforwardly dominant to another, or the resulting phenotype being a halfway stage between the two alleles, the phenotype has aspects directly resulting from each allele.
Who determines your blood type?
Your parents determine your blood type. Your blood type is a cross of two alleles from the parent, one from each parent. Your parents could either give you AA, AO, AB, BB, BO or OO alleles, depending on which two alleles that they have.
How many alleles are there for blood type-?
There are three alleles for blood type: IA=Blood type A IB=Blood type B i=Blood type O The alleles for blood type A and B are codominant so when someone contains the IA and IB alleles, their blood type is AB.
What are three different alleles used to represent blood type?
The three alleles are A, B, and O
Is the three alleles of the single gene that controls blood type is said to be what alleles?
multiple alleles
How many alleles control blood type in humans?
2
Why does the baby have only two alleles if the inheritance of blood type is controlled by three alleles?
Everyone only has two alleles for blood type. The parents each pass one down to the child.
Is ABO blood group determined by multiple alleles?
* Type A alleles could be : IAIA or IAi* Type B alleles could be : IBIB or IBi* Type AB alleles : IAIB* Type O alleles : ii
Blood type in humans is determined by a single gene that has multiple alleles?
Each person has two alleles for their blood type, one dominant and one recessive. Except for type AB blood where the alleles are co-dominant. The allele for O blood is always recessive when paired with either an A or B allele.
Which genotype illustrates codominance of alleles that control blood type in humans?
IAIB (4)
Blood type in humans is controlled by which alleles?
Human blood type is determined by codominant alleles.
How many genes control blood type?
The genes for the others work in similar fashions, though certainly not all have three alleles. The other aspect of blood type which is of most interest to us is the Rh factor. Genetically, this is much simpler than the ABo system. It has only two alleles, one dominant (Rh-positive) and one recessive (Rh-negative).
How blood type is inherit?
Blood type is controlled by multiple alleles. Blood type is inherited by three alleles, one A, one B, and an O, which is recessive Ex. A= IAIA IAi B= IBIB or IBi AB= IAIB O=ii
What are 3 blood alleles?
simply put. A B and O two copies of each allele per person. blood type a = ia ia OR ia io blood type b = ib ib or ib io Blood type o = io io Blood type AB = ia ib
