Final answer:
A woman with blood type A can have children with blood type B if the father has either blood type B or blood type AB.
Step-by-step explanation:
Inheritance of blood types follows certain rules. A woman with blood type A can have children with blood type B if the father has either blood type B or blood type AB. This is because blood type A is caused by the presence of the A antigen, while blood type B is caused by the presence of the B antigen. If the father has blood type B, the child can have blood type B by inheriting the B allele from the father. If the father has blood type AB, the child can have blood type B by inheriting the B allele from the father and blood type A by inheriting the A allele from the mother.