Why is AB blood type an example of codominant inheritance?
Codominance means that neither allele can mask the expression of the other allele. An example in humans would be the ABO blood group, where alleles A and alleles B are both expressed. So if an individual inherits allele A from their mother and allele B from their father, they have blood type AB.
Is AB blood codominant or incomplete dominance?
AB blood type is codominant because the red blood cells have the products of both the A and the B alleles of the ABO gene.
What genotype does a person with AB blood have?
|Blood Type A||Genotypes AA or AO|
|Blood Type B||Genotypes BB or BO|
|Blood Type AB||Genotype AB|
|Blood Type O||Genotype OO|
Are blood types A and B codominant?
The A and B alleles are codominant. Therefore, if an A is inherited from one parent and a B from the other, the phenotype will be AB. Agglutination tests will show that these individuals have the characteristics of both type A and type B blood.
Which blood type is compatible with B during a transfusion?
Are they compatible?
|Patient Type||Compatible Red Cell Types||Compatible Plasma Types (FFP & Cryoprecipitate)|
|B||B, O||B, AB|
|O||O||O, A, B, AB|
|AB||AB, A, B, O||AB|
Does incomplete dominance occur in humans?
Incomplete dominance is rare in humans; we’re genetically complex and most of our traits come from multiple genes. When one parent with straight hair and one with curly hair have a child with wavy hair, that’s an example of incomplete dominance. Eye color is often cited as an example of incomplete dominance.
What type of inheritance pattern is hair texture?
In humans, incomplete dominance occurs with one of the genes for hair texture. When one parent passes a curly hair allele (the incompletely dominant allele) and the other parent passes a straight-hair allele, the effect on the offspring will be intermediate, resulting in hair that is wavy.