ABO Blood Group System

Who was the scientist to introduce ABO blood groups

Choose the correct option with respect to the genetic makeup of the ABO blood grouping system in humans.

Considering ABO blood grouping system in humans, during blood transfusion some combinations of blood groups are compatible (sqrt") whereas the others are incompatible (X). Which ONE of the following options is COR- RECT ?

The number of phenotypes in ABO blood groups is

ABO blood groups is determined by three alleles:

In human beings, 'ABO' Blood group is controlled by which gene ?

ABO blood group is determined by gene I which has _____ alleles.

ABO blood group is determined by three different alleles. How many genotypes and phenotypes are possible?

If there are four allelic forms of the gene controling ABO blood group then what will be the number of possible genotype ?