What strategy would you suggest if a person wants to evolve a pureline in an plant?

Options

A. Cross-breeding
B. Inbreeding
C. Out-breeding
D. Artificial insemination

Answer

To evolve a pure line in a plant, the following strategy can be suggested:

### Step-by-Step Solution:

1. **Understand Pure Line**: A pure line refers to a group of plants that possess uniform characteristics, meaning they express the same traits consistently. This is crucial for breeding programs aimed at maintaining specific desirable traits.

2. **Identify the Breeding Methods**: The question provides several breeding methods: cross-breeding, in-breeding, out-breeding, and artificial insemination. It is essential to understand what each method entails.

3. **Evaluate Cross-Breeding**: Cross-breeding involves mating individuals from different breeds or species. Since the goal is to create a pure line, this method is not suitable as it introduces genetic variability rather than uniformity.

4. **Evaluate In-Breeding**: In-breeding involves mating individuals of the same species and genus. This method promotes homozygosity, which means that the offspring are more likely to express the same traits as their parents. This is a suitable method for developing a pure line.

5. **Evaluate Out-Breeding**: Out-breeding is the mating of individuals from the same species but different genetic backgrounds. While it can introduce new traits, it does not focus on creating a pure line, as it can lead to genetic diversity rather than uniformity.

6. **Evaluate Artificial Insemination**: Artificial insemination is a technique where sperm is artificially introduced to the female plant. This method does not involve natural breeding and does not contribute to the establishment of a pure line.

7. **Conclusion**: Based on the evaluations, the most effective strategy for evolving a pure line in a plant is **in-breeding**. This method ensures that the offspring maintain the desired traits consistently.

### Final Answer:
The suggested strategy to evolve a pure line in a plant is **in-breeding**.

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