The $ABO$ blood group is controlled by:

The genotype of blood group $A$ will be

If the mother's blood group is $AB$ and the father's blood group is $O$,what will be the possible blood group$(s)$ of the child?

Multiple alleles are present:

In humans,how many genotypes and phenotypes are produced by the three different alleles of the $ABO$ blood group system?

How many of the following genotypes possibly represent normal wings in Drosophila?
$(i)$ $Vg^{+} Vg^{+}$
(ii) $Vg^{+} vg^{ni}$
(iii) $Vg^{+} vg^{no}$
(iv) $Vg^{+} vg^{st}$
$(v)$ $Vg^{+} vg$