The relationship between plants and phytophagous insects..
After graduation, Krista has an epiphany and realizes she wants to devote her life to studying the relationship between plants and phytophagous insects. She keeps finding a consistent trend between insect lineages that seem to be specialists and the types of hosts that they use; and lineages that seem to be generalists and the types of hosts that they use. In some dark corner of her brain she recalls that inspirational day when she learned about a hypothesis to explain this.
(a) What is this hypothesis called?
(b) According to this hypothesis, which types of host plants do each of these lineages use and why?
(c) According to this hypothesis and your answer in (A), which groups are more likely to be involved in pairwise coevolution, and which in diffuse coevolution. Why?
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