EVOLUTION
EVIDENCE FOR EVOLUTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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species that are perfect and unchanging.
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homologous structures
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characteristics acquired during the lifetime of the organism.
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natural variations that are useful or beneficial.
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Detailed explanation-1: -Farmers and breeders allowed only the plants and animals with desirable characteristics to reproduce, causing the evolution of farm stock. This process is called artificial selection because people (instead of nature) select which organisms get to reproduce.
Detailed explanation-2: -Artificial selection is the identification by humans of desirable traits in plants and animals, and the steps taken to enhance and perpetuate those traits in future generations.
Detailed explanation-3: -The presence of genetic variation in plant populations is useful for conservation and breeding programs. Plant genetic diversity offers opportunity for researchers to develop new improved varieties with desirable traits, which accommodates both farmers and breeders preferred traits.
Detailed explanation-4: -Selection describes the process of choosing animals that meet the requirements of the breeding objective and will, in a breeding enterprise, pass particular traits onto their progeny. Selection should consider both subjectively measured traits (visual assessment) and objectively measured traits (genetic assessment).