$A$ woman is married for the second time. Her first husband was $ABO$ blood type $A,$ and her child by that marriage was type $O.$ Her new husband is type $B$ and their child is type $A B$.

What is the women's $ABO$ genotype and blood type?

If a certain patient with blood group $B$ requires immediate blood transfusion, the following type can be given to him

What percentage of homozygous $R h^{-i i}$ will be born amongst four children of a couple where the husband is heterozygous for $R h^{+i i}$ and wife is homozygous for $R h^{-i i}$ gene?

In a medico-legal case of accidental interchange between two babies in a hospital, the baby of blood group $A$ could not be rightly given to a people

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