Question

4) You are studying the shaggy parasol, Lepiota rachodes, a species of poisonous mushrooms. Being very careful not to accidentally eat them, you quantify the % dry mass of the mushrooms that is made of toxic chemicals. You find that there is an intriguing pattern, in which mushrooms with high toxicity produce fewer spores, but are less likely to get bitten into. Here is a portion of your data: Phenotype: % dry mass poison 3.5% 2.0% 1.0% # spores produced 250 280 350 #surviving mushrooms 240 220 200 a) (3 pts) What is the relative fitness of each phenotype? For full credit show your work. 3.5% 2.0% 1.0% b) (2 pts) Is this an example of natural selection? Why or why not?

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