C Genetic variation must exist in the population
D Those with the highest pesticide resistance reproduced
The model shows the process of evolution at work in a population of aphids with varying amounts of pesticide resistance . Select ALL of the requirements for evolution to occur . A Sexual reproduction must occur . B The final population is purely random C Genetic variation must exist in the population D Those with the highest pesticide resistance reproduced E Only those with the highest pesticide resistance level survived exposure to the pesticide .
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