What are the only 2 parental blood types that when crossed could result in the production...
What are the only 2 parental blood types that when crossed could result in the production a child of type A, B, AB and O blood(they could theoretically have 4 children with 4 different blood types)? What are the parental genotypes?
Homework Answers
blood group is determined by the ABO locus, there are three alleles at this locus, IA, IB,i.
IAIA, IAi- A type blood
IBIB, IBi- B type blood
IAIB- AB type blood
ii- O type blood
if the genotype of one parent is IAi, the phenotype is A type blood and the genotype of the other parent is IBi, the phenotype is B type blood.
IAi * IBi
| IA | i | |
| IB | IAIB ( AB type blood) | IBi ( B type blood) |
| i | IAi ( A type blood) | ii ( O type blood) |
so it is possible to get children with A, B, AB, O type blood.
the parental genotypes are IAi and IBi.
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