Starting from the wild mustard Brassica oleracea, breeders have created the strains known as Brussel sprouts, broccoli, kale, and cabbage. Which of the following statements is supported by this observation?

Question

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The fact that breeders have been able to create different strains from the wild mustard Brassica oleracea suggests that there is enough heritable variation within the species to create different features. This indicates that there is genetic diversity within the population, which allows for the selection of desirable traits through artificial selection. Option A is incorrect because while environmental factors can influence the expression of traits, the fact that breeders were able to create distinct strains suggests that much of the variation is heritable. Option C is incorrect because there must be enough heritable variation within the wild mustard species for selection to be able to occur. Option D is not supported by the observation and is therefore incorrect.

Starting from the Wild Mustard Brassica Oleracea, Breeders Have Created