In a natural population of a grass species, the average protein content of seeds would increase over time if seeds with higher protein content survived better and grew into individuals that produced many seeds with high protein content when they matured. Why?
A. Seeds with higher protein content become more common in the population because this characteristic is heritable and increases survival.
B. In the lifetime of individual grass plants, the protein content of seeds would increase because higher protein content increases survival but is not heritable.
C. In the lifetime of individual grass plants, the protein content of seeds would increase because higher protein content is heritable and increases survival.
D. Seeds with higher protein content become more common in the population because this characteristic is artificially selected.
Answer: A. Seeds with higher protein content become more common in the population because this characteristic is heritable and increases survival.
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