What strategy would you suggest if a person wants to evolve a pure line in an animal ?

Options

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

Explanation

To evolve a pure line in an animal, the most effective strategy is **inbreeding**. Here's a step-by-step breakdown of the reasoning:

1. **Understanding Pure Line**: A pure line refers to a group of organisms that have uniform genetic characteristics, meaning they possess the same alleles for specific traits. This results in no variation in those traits across generations.

2. **Evaluating Crossbreeding**: Crossbreeding involves mating individuals from different genetic backgrounds or species. This method introduces genetic variation, which is contrary to the goal of developing a pure line. Therefore, crossbreeding is not suitable for this purpose.

3. **Evaluating Inbreeding**: Inbreeding is the mating of genetically similar or identical organisms. This practice helps to maintain and propagate specific desirable traits without introducing new genetic variations. As a result, inbreeding is a suitable strategy for evolving a pure line in animals.

4. **Evaluating Outbreeding**: Outbreeding refers to mating between genetically non-identical organisms. Similar to crossbreeding, this method introduces genetic diversity, which is not conducive to forming a pure line. Thus, outbreeding is not an appropriate strategy.

5. **Evaluating Artificial Insemination**: Artificial insemination is a technique used to introduce sperm into the reproductive tract of an animal without natural mating. While it can facilitate breeding, it does not inherently lead to the development of a pure line, as it does not control the genetic makeup of the offspring.

6. **Conclusion**: Based on the evaluations, the most effective strategy to evolve a pure line in an animal is **inbreeding**.