Answer:
Genotypes: AB, Bo, Ao, and oo
Phenotypes: Blood types AB, B, A, and O
Step-by-step explanation:
Heterozygous type B means the genotype of Bo; there is no little 'b,' and AB would mean blood type AB. Likewise, heterozygous type A would mean Ao. Thus, after a cross of Bo and Ao, you would get the following genotypes: AB, Bo, Ao, and oo, and respectively, the phenotypes of blood type AB, B, A, and O.