A child's blood group is ‘$O$'. The parents blood groups cannot be
$AB$ and $O$
$B$ and $O$
$A$ and $B$
$A$ and $A$
Definitions / Explanation : Co-dominance
Identify the wrong statement with reference to the gene $'I'$ that controls $ABO$ blood groups.
All of this obeys Mendel's laws except
A child of $O$ - blood group has $B$ -blood grouped father. The genotype of father will be
If two persons with $‘AB’$ blood group marry and have sufficiently large number of children, these children could be classified as $‘A’$ blood group: $‘AB’$ blood group : $‘B’$ blood group in $1 : 2 : 1$ ratio. Modern technique of protein electrophoresis reveals presence of both $‘A’$ and $‘B’$ type proteins in $‘AB’$ blood group individuals.This in an example of