Note that the ABO blood type trait is both an example of multiple alleles and co

Question

Note that the ABO blood type trait is both an example of multiple alleles and codominance. A woman has type B blood of the IBi genotype. If she has children with a type A man of the IAi genotype, what are the following probabilities?

First diagram the probabilities of any children with a Punnett square. Use the notations for alleles. Then calculate the following:

Probability of any child who is type O:

Probability of having a child that is type A or type AB:      

Probability of three children with type B blood:                  

Explanation / Answer

the codominance of blood type between A abd B is determined by two dominant alleles (IA and IB) and one recessive allele (i). Blood type B means IBIB or IBi blood type A meansIAIA or IAi. allele i is recessive in relation to the alleles IA and IB.

mother with B marries to A: children can have A, B ,AB or O.probablity of O: 25%. Probablity of A or B:50%, probablity of AB:25%

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