Individuals in a population of sunflowers have a range of flower sizes, and the average diameter of their flowers is 5 cm. What effect would selection have on flower diameter in this population of sunflowers? A. The average flower diameter may not change if the population is under disruptive selection. B. Small flowers are favoured if the population is under disruptive selection. C. The average flower diameter will increase if the population is under stabilizing selection. D. Large flowers are favoured if the allele for flower size is dominant when the population is under directional selection.

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