Blood group of the father is $A$ and blood group of mother is $B$. Then predict the blood group of the progeny –

The father has blood group $AB$ and mother $‘O'$. The child is supposed to have which of the following bloodgroups

The plasma membrane of the red blood cells has …$A$… polymers that protrude from its surface and the kind of sugar is controlled by the gene. The gene I has three alleles …$B$… The alleles and produce a slightly different form of the sugars, while allele i doesn't produce any …$C$…

Choose the correct option for $A, B$ and $C$

If one parent has blood group $A$ and the other parent has blood group $B$, the offsprings have which blood group

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