If one parent has blood group $A$ and the other parent has blood group $B$, the offsprings have which blood group
$AB$
$O$
$BO$
$A, B, AB, O$
In a marriage between male with blood group $A$ and female with blood group $B$, the progeny had either blood group $AB$ or $B$. What could be the possible genotype of parents ?
A person with blood group $‘A'$ can be given blood of which group
Write short note on co-dominance.
$ABO$ blood groups in humans are controlled by the gene $I$. It has three alleles $ I^A, I^B$ and $i$. Since there are three different alleles, six different genotypes are possible. How many phenotypes can occur?
$ABO$ blood grouping is controlled by gene I which has three alleles and show codominance. There are six genotypes. How many phenotypes in all are possible?