Which statement describes the blood type of a person with the alleles IAi? It is type AB because I and i are codominant. It is type AB because A and i are codominant. It is type A because i is dominant and A is recessive. It is type A because A is dominant and i is recessive.
The AB blood type is the only one that is codominant. The other blood types display regular dominance.
A person with phenotype AB blood must have genotype AB blood. Meaning that the person has inherited both A and B alleles.
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.
The child could be AB, A, B, or O. It all depends on what the genotypes are for the parents. If they are both homozygous dominant (AA and BB), they will have an AB child. If one is AA and the other BO, the child could be AB or A. Both A and B alleles are completely dominant over the O allele. They are codominant, however, and when a child receives both A and B alleles from her parents, he or she will be AB blood type.
POLYGENIC!
Codominant.
A cross between two dominant homozygotes may produce a codominant animal.
It depends. If the mother of the child is A positive as well, the child will be A positive. This is also true if the mother is a type O. It wont be possible if the mother is B positive, since the child will be AB positive (the blood types are codominant).
No, autosomal recessive
no the do not chromosomes assort independently
codominant