4.40 Two children.
Each of us has an ABOblood type, which describes whether two characteristic, called Aand B, are present. Every one of us has two blood type alleles(gene forms), one inherited from our mother and one from ourfather. Each of these alleles can be A, B, or O. Which two weinherit determines our blood type. Here is a table that shows whatour blood type is for each combination of two inheritedalleles:
| 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 aparent's two alleles with probability 0.5. We inherit independentlyfrom our mother and father.
Samantha has alleles Band O. Dylan has alleles A and B. They have two children.
What is theprobability that both children have blood type A? (report to 4decimal places as a proportion) ________________________
What is theprobability that both children will have the same blood type?(report to 3 decimal places as a proportion) _________________
