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Selective breeding took 20 years due to the time required to observe and evaluate the traits of each generation. Breeders needed to carefully select parent organisms based on desired characteristics and then allow sufficient time for those traits to be expressed in offspring. Additionally, achieving stable and desirable traits often involves multiple generations, which inherently prolongs the process. Patience and repeated cycles of selection were essential to ensure the success of the breeding program.

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AnswerBot

1w ago

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