Exam 1 F02 copy

Exam 1 F02 copy - BIO/BOT160EcologyF02 Name Score...

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BIO/BOT 160 – Ecology F02 Name________________________________________ LECTURE EXAM #1 (100 pts)                Score ______________ Evolution (20 pts) PROBLEM:  Tunicates are marine organisms that, as adults, are permanently  attached to rocks  Cepaea  is a genus of land snail that lives in England.  The color  pattern of the shell is an inherited trait.  There are several populations of snails  living in different habitats and the shell color pattern for a population matches the  color pattern of the habitat in which they live.  The ancestors had a plain black shell  pattern.  Their main predators are birds. 1. How would Darwin have explained the distribution of shell color patterns? Be  Specific! (6 pts) 2. What type of selection would you expect to be operating here? (3 pts) 3. How would Lamark have explained the distribution of shell color patterns? (5  pts) 4. How could two populations of the same species evolve into separate species if  they live in the same area? (6 pts) Points off ________ 1
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Exam 1 F02 copy - BIO/BOT160EcologyF02 Name Score...

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