Question

Human blood type is determined by multiple co-dominant alleles. There are three different alleles, known as IA, IB, and i. The IA and IB alleles are co-dominant, and the i allele is recessive. The possible human phenotypes for blood group are type A, type B, type AB, and type O. Type A and B individuals can be either homozygous (IAIA or IBIB, respectively), or heterozygous (IAi or IBi, respectively).
5. What is the phenotype for the following genotypes:
IAIA _____________________________
IBi _____________________________ IBIB _____________________________
ii ______________________________
IAi _____________________________

Answer 1

IAIA - Type A
IBi - Type B
IBIB - Type B
ii - Type O
IAi - Type AB

Answer 2

What is the genotype for these phenotypes:
A blood type ____________________
O blood type ____________________
B blood type ____________________
AB blood type____________________

Answer 3

A blood type - IAIA or IAi (homozygous or heterozygous for the IA allele)
O blood type - ii (homozygous for the i allele)
B blood type - IBIB or IBi (homozygous or heterozygous for the IB allele)
AB blood type - IAIB (heterozygous for both the IA and IB alleles)