(a) Explain a monohybrid cross taking seed coat colour as a trait 1n Pisum sativum. Work out the cross upto F generation.
(b) State the laws of inheritance that can be derived from such a cross.
(c) How is the phenotypic ratio of F2 generation different in a dihybrid cross?

Explanation

### Step-by-Step Solution

#### (a) Monohybrid Cross for Seed Coat Colour in Pisum sativum

1. **Identify the Trait and Alleles**:
- In Pisum sativum (pea plant), let's consider seed coat color as the trait. The dominant allele for the seed coat color is represented by "R" (round seed coat), and the recessive allele is represented by "r" (wrinkled seed coat).

2. **Parental Generation (P)**:
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