Final answer:
Selective breeding, or artificial selection, has been utilized for millennia to alter traits in organisms. While effective in some cases, it raises ethical concerns and has led to health issues in pets bred for specific characteristics.
Explanation:
Selective breeding, also known as artificial selection, has been used for thousands of years to modify the traits of organisms through human intervention. While it has been successful in improving certain characteristics in simple organisms like bacteria, its efficacy in complex organisms is debatable due to unintended consequences.
For example, in dogs and cats bred for specific traits, such as appearance or behavior, there have been negative health implications like increased susceptibility to various diseases and genetic disorders.
Despite its benefits in agriculture and certain contexts, the ethical considerations surrounding selective breeding and its impact on genetic diversity and animal welfare raise important questions that require careful deliberation.
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