A person with B blood type marries someone with blood type A.They have children.What is the LARGEST percentage of their offspring that could have blood type O,if both parents are heterozygotes? (Draw a Punnett square to help you figure this out. )

Question

Quizplus · Accepted Answer

When a person with B blood type and a person with A blood type have children, they could pass on either a B allele, an A allele, or an O allele to their offspring. In this case, both parents are heterozygotes (Bb and Ab), meaning they each have one B/A allele and one O allele. When we create a Punnett square with these genotypes, we find that there is a 25% chance that their offspring will inherit an O allele from both parents, resulting in blood type O. Therefore, the largest percentage of their offspring that could have blood type O is 25%.

A Person with B Blood Type Marries Someone with Blood