In heterozygous condition, the individual expression of both the alleles in the phenotype is exemplified by
Colourblindness
$AB$ blood group
Rh factor
$A$ and $B$ blood group
The blood of $AB$ group donor can be transfused to a person with the blood group
Which of the following is genetically dominant in man
When dominant and recessive alleles express themselves together, it is called
A person having blood group $O$ can receive blood of
The most popularly known blood grouping is the $ABO$ grouping. It is named $ABO$ and not $ABC$, because ' $O$ ' in it refers to having