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Artificial Selection Also called selective breeding What is artificial selection? • Humans choosing traits desirable to them rather than nature choosing traits that are passed on • Humans have an effect on the evolution of a species rather than letting nature choose the path of evolution When is artificial selection used? • • • • Domesticated animals such as dogs Farming crops and animals Pharmaceuticals (new drugs) Genetic engineering Pros and Cons • Pros: – Humans can manipulate organisms to benefit them – New variations of organisms can be produced (example: cabbage, broccoli, cauliflower are all variations of the same plant) • Cons: – Selectively bred organisms are more susceptible to environmental changes and diseases – Inbreeding can become a problem – In animals artificial selection can cause health problems