A farmer wants to grow larger tomatoes to sell at their farm stand next year, so they only save and plant seeds from the tomato plants with the largest harvested fruits. This corresponds to a selection coefficient (S) that is...
A farmer wants to grow larger tomatoes to sell at their farm stand next year, so they only save and plant seeds from the tomato plants with the largest harvested fruits. This corresponds to a selection coefficient (S) that is...
A positive value (S > 0).
A negative value (S < 0).
Neither negative or positive (there is no adaptation, so S = 0).
Evolutionary response is an absolute value.