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 ?
$\mathrm{I}^{\mathrm{A}{i}}$ (Male) $: \mathrm{I}^{\mathrm{B}} \mathrm{I}^{\mathrm{B}}(\text { Female })$
$\mathrm{I}^{\mathrm{A}} \mathrm{I}^{\mathrm{A}}$ (Male) $: \mathrm{I}^{\mathrm{B}} \mathrm{I}^{\mathrm{B}}(\text { Female })$
$\mathrm{I}^{\mathrm{A}} \mathrm{I}^{\mathrm{A}}(\text { Male }): \mathrm{I}^{\mathrm{B}}$ i (Female)
$\mathrm{I}^{\mathrm{A}{i}}$ (Male) $: \mathrm{I}^{\mathrm{B}_{1}}$ (Female)
In heterozygous condition, the individual expression of both the alleles in the phenotype is exemplified by
When dominant and recessive alleles express themselves together, it is called
A gene showing codominance has
As per $\mathrm{ABO}$ blood grouping system, the blood group of father is $\mathrm{B}^{+}$, mother is $\mathrm{A}^{+}$and child is $\mathrm{O}^{+}$. Their respective genotype can be
Choose the most appropriate answer from the options given below :
Three children in a family have blood types $O$, $AB$ and $B$ respectively. What are the genotypes of their parents?