Human blood types are determined by genes that follow the CODOMINANCE pattern of inheritance. There are two codominant alleles (A and B) and one recessive allele (o).

Fill in the genotype for each person based on the description:

Homozygous for the “B” allele BB
Heterozygous for the “A” allele
Type O
Type AB

Word Bank:
1. oo
2. AB
3.Bo
4. BB
5. Ao
6. AA

1. oo

2. Ao
3. Bo
4. BB
5. Ao
6. AA