Gallflies (Eurosta) induce plants to produce goldenrod galls. The diameter of th
ID: 95716 • Letter: G
Question
Gallflies (Eurosta) induce plants to produce goldenrod galls. The diameter of these galls is variable and is heritable. Given the above information about the diameter of galls, which of the following is/are true about predators influencing the Gallfly population?
-Overall, the intermediate gall diameter has the greatest fitness
-Downy woodpeckers selected against larger gallfly larva
-Overall, the small gall diameter has the greatest fitness
-Eurytoma gigantea selected against the smaller gallfly larva
-Overall, the large gall diameter has the greatest fitness
B 1.0 Downy woodpecker 0.8- 0.6 0.4- 0.2 0.0 5 Gall diameter (mm) 10 15 20 25 30 2Explanation / Answer
If we observe the graph, it is clearly showing that moderate size of gall intermediate size of gall is the fact that sustains the maximum number of gallflies, as per my knowledge the correct option should be "Overall, the intermediate gall diameter has the greatest fitness"
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