Why are alleles IA and IB considered codominant?
However, when both these dominant alleles
The presence of antigen on R.B.C.s determines the blood group of the individual.
There are 4 blood groups: A, B, AB and O. The genotype of differrent blood groups clearly explains the phenomenon of codominance.
Genotypes of 4 blood groups are as follows:
Blood group A:
Blood group B :
Blood group AB:
Blood group O: