In a pea plant ,smooth seed coat is dominant over wrinkled seed coat.What will be expected ratio of phenotypes of the offspring in a cross between:
(i)Heterozygous smooth`xx` Heterozygous smooth (ii)Heterozygous smooth`xx`Homozygous wrinkled
(iii)Heterozygous smooth `xx` Homozygous smooth

Explanation

To solve the problem, we need to determine the expected phenotypic ratios of offspring from three different crosses involving pea plants with smooth and wrinkled seed coats. Smooth seed coat (T) is dominant over wrinkled seed coat (t). Let's analyze each cross step by step.

### Step 1: Cross (i) Heterozygous smooth (Tt) x Heterozygous smooth (Tt)

1. **Identify the genotypes**: Both parents are heterozygous for smooth seed coat, represented as Tt.
2. **Set up a Punnett square**:
```
T | t
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