In $ABO$ blood grouping,there are $P$ genotypes and $Q$ phenotypes.
$\quad P \quad\quad Q$

$A$ child with a mother of $B$ blood group and a father of $AB$ blood group will not have which of the following blood groups?

The genotypes of a husband and wife are $I^AI^B$ and $I^Ai$ respectively. How many different genotypes and phenotypes are possible among their children?

The following table is regarding $ABO$ blood group. Identify $W, X, Y, Z$.

Genotype	Blood group
$I^{A} I^{A}$	$A$
$W$	$A$
$I^{B} I^{B}$	$B$
$X$	$B$
$I^{A} I^{B}$	$Y$
$Z$	$O$

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 both parents have blood group $AB$, which blood group cannot be found in their child?