What are the two possible genotypes for blood type A?
For example, blood type A+ or AB-. Each factor is determined by a separate gene. Blood type genotypes and phenotypes are listed in the table to the right. For example, the blood phenotype A has two possible genotypes: IAIA and IAi.
What is the possible genotype for a Type A+ individual?
So the possible genotypes of someone whose phenotype is A+ are: IA IA (homozygote: both alleles are the same) and IA i (heterozygote: alleles are different).
What is AA in genotype?
The term “homozygous” is used to describe the pairs “AA” and “aa” because the alleles in the pair are the same, i.e. both dominant or both recessive. In contrast, the term “heterozygous” is used to describe the allelic pair, “Aa”.
How many different genotypes are possible for each trait?
There are three common alleles in the ABO system. These alleles segregate and assort into six genotypes, as shown in Table 1. As Table 1 indicates, only four phenotypes result from the six possible ABO genotypes.
Why are there 6 different genotypes for blood type but only 4 phenotypes?
Genetics of the ABO System With three alleles, there are six possible genotypes for the ABO blood group. However, alleles IA and IB are both dominant to allele i and codominant to each other. This results in just four possible phenotypes (blood types) for the ABO system.
What are the possible genotypes for each blood type?
Table 4-5. Correlation of ABO phenotypes and genotypes.
| Phenotype | Possible Genotype |
|---|---|
| A | AA or AO |
| B | BB or BO |
| AB | AB |
| O | OO |
What are the 4 blood genotypes?
There are four main ABO blood type groupings: A, B, AB, and O. These blood groups are determined by the antigen on the blood cell surface and the antibodies present in the blood plasma. Antibodies (also called immunoglobulins) are specialized proteins that identify and defend against foreign intruders to the body.
What are the 6 genotypes of blood?
In 1924, this blood group was classified into four antigens (A, B, O and AB) and six genotypes (AA, AO, BB, BO, OO and AB). It is one of the conventional blood group polymorphisms, which are important for genetic markers in linkage analysis, blood transfusion, personal identification and disease detection (4,5).
What are the 3 types of genotypes?
The different types of genotypes are- homozygous recessive (pp), homozygous dominant (PP), and heterozygous (Pp).
How many genotypes are possible with 4 alleles?
10 genotypes 4 alleles there are 1 + 2 + 3 + 4 = 10 genotypes.
What are the 6 blood type genotypes?
A description of the pair of alleles in our DNA is called the genotype. Since there are three different alleles, there are a total of six different genotypes at the human ABO genetic locus. The different possible genotypes are AA, AO, BB, BO, AB, and OO.
What are the 4 types of genotypes?
There are four hemoglobin genotypes (hemoglobin pairs/formations) in humans: AA, AS, SS and AC (uncommon)….There are four blood GROUPS:
- Type A (marker A)
- Type B (marker B)
- Type AB (blood cells have both A and B markers)
- Type O (blood cells have neither A or B markers)
Sep 1, 2017
What are the blood genotypes?
Typically, there are five (5) distinct types of blood genotype. They are AA, AS, AC, SS, and SC. While the first 2 pairs (AA & AS) are normal, AC is rare and the latter two (SS, SC) are irregular and anomalous, commonly causing sickle cell disease.
How many genotypes has 5 alleles?
The calculator does not go beyond 5 alleles and 15 possible genotypes.
How do you calculate genotypes?
As more and more genes control a trait, a greater number of genotypes are possible. The formula that predicts the number of genotypes from the number of genes is 3 to the power n. (n is the number of genes.)
How many genotypes does 4 alleles have?
10 genotypes 4 alleles there are 1 + 2 + 3 + 4 = 10 genotypes.
How many genotypes does 3 alleles have?
six possible genotypes With three alleles 1, 2, 3 there are six possible genotypes: 11, 12, 13, 22, 23, 33. First we must appreciate that genes do not act in isolation. The genome in which a genotype is found can affect the expression of that genotype, and the environment can affect the phenotype.