3. A man with type B blood (genotype BB) is married to a woman with type O blood. What proportion of their children will have: Show the Punnett A blood? __ B blood? __ blood __ AB blood __

## Step 1<br />The problem involves understanding the inheritance of blood types in humans. The blood type is determined by the alleles a person inherits from their parents. The alleles for blood type are A, B, and O. The A and B alleles are co-dominant, meaning that if a person has both an A and a B allele, they will have AB blood. The O allele is recessive, meaning that a person will only have O blood if they inherit two O alleles.<br /><br />## Step 2<br />In this case, the man has type B blood with a genotype of BB, and the woman has type O blood with a genotype of OO. This means that the man can only pass on a B allele, while the woman can only pass on an O allele.<br /><br />## Step 3<br />When we create a Punnett square to visualize the possible combinations of alleles in their children, we see that all possible combinations involve a B allele from the father and an O allele from the mother. This means that all children will have type B blood.