BioBeyond Disease Detective Practice Exam 2025 – Complete Prep Guide

To understand Ami's chances of inheriting the B blood type, you need to consider the genetics of blood types. The ABO blood group system is determined by two alleles, A and B, and the presence of the O allele which is recessive. The possible genotypes and phenotypes are as follows:

- Type A can have AA or AO genotypes.

- Type B can have BB or BO genotypes.

- Type AB has the genotype AB.

- Type O has the genotype OO.

If we know the blood types of both parents, we can use a Punnett square to predict the likelihood of inherited blood types in offspring.

If one parent has blood type B (which can be either BB or BO) and the other has blood type O (genotype OO), the possible combinations for the child are as follows:

- If the B parent is BB, the children will all inherit a B allele from the B parent and an O allele from the O parent, resulting in all children being type B (100% chance of type B).

- If the B parent is BO, there is a 50% chance the child will inherit the B allele, resulting in blood type B, and a 50% chance of inheriting the