What are the 4 possible 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 alleles for blood type in humans?
The four main blood groups A, B, AB, and O are controlled by three alleles: A, B, and O. As humans are diploid, only two of these can be present in any one genotype. In other words, only two of these alleles are present at the same time in a person’s cell.
What are the phenotypes of type A blood?
If you have an AA or AO genotype, you will have the phenotype of type A blood; if you have a BB or BO genotype, you will have a type B blood phenotype; if you have an AB genotype, you will have a type AB blood phenotype; and if you have an OO genotype, you will have a type O blood phenotype.
How many phenotypes are there for blood type?
four
The four basic ABO phenotypes are O, A, B, and AB.
How can a single gene lead to 4 different blood groups?
So the A version of the ABO genes makes the “A” version of a protein, the B version a B version of a protein and importantly, for our discussion, the O version doesn’t make either. Your blood type is determined by which of these proteins you actually make. This is why there are four different blood types.
Can two O positive parents have AB positive child?
But it is technically possible for two O-type parents to have a child with A or B blood, and maybe even AB (although this is even more unlikely). In fact, a child can get almost any kind of blood type if you consider the rule-breaking exceptions.
What phenotype is RR?
The result in the heterozygous genotype (Rr) is a phenotype that is a mixture of red and white, or pink.
How many phenotypes and genotypes are possible if a character is controlled by 4 alleles of a gene?
Since there are three different alleles, six different genotypes are possible.
How many phenotypes are possible if a character is controlled by 4 pairs of Polygenes?
Similarly, four pairs of genes will contain four heterozygotes. Therefore, the number of genotypes would be 81 in four pairs of polygenes. Option “E” is the correct answer.
How many blood phenotypes are there?
The four basic ABO phenotypes are O, A, B, and AB. After it was found that blood group A RBCs reacted differently to a particular antibody (later called anti-A1), the blood group was divided into two phenotypes, A1 and A2.
What are examples of phenotypes?
Examples of phenotypes include height, wing length, and hair color. Phenotypes also include observable characteristics that can be measured in the laboratory, such as levels of hormones or blood cells.