In shorthorn cattle genes for red $(r_1)$, and white $(r_2)$ coat colour occur. Crosses between red $(r_1r_2)$ and white $(r_2r_2)$ produced $(r_1r_2)$ roan. This is an example of
Complementary genes
Epistasis
Codominance
Incomplete dominance
The most popularly known blood grouping is the $ABO$ grouping. It is named $ABO$ and not $ABC$, because $“O”$ in it refers to having
$ABO$ blood grouping is controlled by gene I which has three alleles and show codominance. There are six genotypes. How many phenotypes in all are possible?
A man with blood group ‘$AB$' marries a woman with ‘$O$' blood group. In this situation
Give differences : Incomplete dominance and Co-dominance
In a medico-legal case of accidental interchange between two babies in a hospital, the baby of blood group $A$ could not be rightly given to a people