A child has blood group O. If the father has blood group A and mother's blood group is B, work out the genotypes of parents and the possible genotypes of other offspring.

Explanation

To solve the problem step by step, we will determine the genotypes of the parents based on the blood groups and then calculate the possible genotypes of the offspring.

### Step 1: Determine the genotype of the child
The child has blood group O. The genotype for blood group O is represented as **ii** (where 'i' is the allele for blood group O).

### Step 2: Determine the possible genotypes of the parents
- The father has blood group A. The possible genotypes for blood group A are **IAIA** (homozygous) or **IAi** (heterozygous).
- The mother has blood group B. The possible genotypes for blood group B are **IBIB** (homozygous) or **IBi** (heterozygous).
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