In a particular plant species majority of the plants bear purple flowers. Very few plants bear white flowers. No intermediate colours are observed. If you are given a plant bearing purple flowers, how would you ascertain that it is a pure breed for that trait? Explain.

Explanation

To ascertain whether a plant bearing purple flowers is a pure breed for that trait, follow these steps:

### Step-by-Step Solution:

1. **Understand the Inheritance Pattern**:
- In the given plant species, purple flowers are dominant (represented as "P") and white flowers are recessive (represented as "p"). This means that a plant can either be homozygous dominant (PP) or heterozygous (Pp) for the purple flower trait.

2. **Conduct a Test Cross**:
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