Julia has type a blood and julia's father has type o blood. jesse has type ab blood. if julia and jesse have a child, what is the chance that the child would have type ab blood?

25% chance

Explanation:

First of all, Julia's father has blood type O and Julia blood type A. If Jesse's blood type is AB, then they have a body then we have a cross between blood group AB and blood group A. From the blood group of the mother and father alone, they are likely to have children with blood group A, B, or AB and a possibility for a child with blood group O. Hence the chance is 25%.

explanation:

may i ask what challenges?

fertile good for trade etc