The number of phenotypes in $ABO$ blood group is
$1$
$4$
$6$
$8$
Genotype of blood group $‘A'$ will be
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
$A$ : Blood group phenotype is controlled by presence or absence of antigens present on surface coating of $RBC$.
$R$ : These antigens are of three types and found in the oligosaccharides rich head regions of a glycophorin
A child has blood group $O .$ If the father has blood group $A$ and mother blood group $\mathrm{B},$ work out the genotypes of the parents and the possible genotypes of the other offsprings.
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