Question

Justin's parents both have type AB blood, and Brittany's parents also both have type AB blood. What are the chances that Justin and Brittany's son Theodore has type A blood?

1) 75
2) 25
3) 0
4) 100

Answer 1

Given that both Justin and Brittany's parents have AB blood, their son Theodore has a 25% chance of having type A blood according to the ABO blood type inheritance pattern.

Step-by-step explanation:

The question concerns the inheritance patterns of ABO blood types, which is a Biology topic. Specifically, we are looking at the probability that Justin and Brittany's son Theodore has type A blood, given that both sets of parents have type AB blood. According to the principles of inheritance, an individual with type AB blood has one A allele and one B allele. The blood type phenotype ratio for two AB parents is 1A:2AB:1B, meaning each phenotype has a 25% likelihood of occurrence in any given child.

Therefore, the chances that Justin and Brittany's son Theodore has type A blood are 25%.