If a certain patient with blood group $B$ requires immediate blood transfusion, the following type can be given to him
$O$ and $B$
$O$ and $AB$
$A$ and $AB$
$B$ and $AB$
Definitions / Explanation : Co-dominance
$ABO$ blood groups are controlled by the gene
A child with mother of $O$ blood group and father of $A$ blood group, will have the following blood group.
A person meets with an accident and great loss of blood has occurred. There is no time to analyse his blood group. It is safe to transfer blood of group
Mother and father both have blood group $‘A’$. They have two children one with blood group $‘O’$ and second one with blood group $‘A’$. They have