1. Each of us has an ABO blood type, which describes whether two characteristics called A and B are present. Every human being has two blood type alleles (gene forms), one inherited from our mother and one from our father. Each of these alleles can be A, B, or O. Which two we inherit determines our blood type. Here is a table that shows what our blood type is for each combination of two alleles: Alleles inherited Blood type A and A A A and B AB A and O A B and B B B and O B O and O O We inherit each of a parent's two alleles with probability 0.5. We inherit independently from our mother and father. Elise has alleles A and B. John has alleles A and B. They have four children. What is the probability that all of their children have the same blood type? (Round your answer to four decimal places if necessary. Remember to express your answer as a proportion.)