Abigail has alleles A and O. Jose has alleles A and B. They have 2 children. What is the probabibility that atleast 1 of the 2 children has blood type B. Show the work. Answer is 43.75%. You can use 2ab + b^2. 2. Abigail has alleles A and O . Jose has alleles A and B . They have two children. What is the probability that at least one of the two children has blood type B? Show your work below..