Can Parents with A and B Blood Types Have Children with O Type Blood?

Question

Can parents who are A and B blood types have children with O type blood?

Answer

Blood type inheritance follows Mendelian genetic laws. If one parent has A blood type (genotype AA or AO) and the other has B blood type (genotype BB or BO), the child could potentially have O type blood (genotype OO). This is because O type blood is recessive; if both parents provide an O gene, the child will express O type blood.