Lab Exam 2

Lab Exam 2


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Your exam will be run through plagiarism detection programs that compare the wording of your answers to everything that is available on the internet, as well as other students’ submissions. IF YOUR EXAM RECEIVES ANY FLAGS FOR ANY GIVEN QUESTION, YOU WILL RECEIVE A “0” ON THIS EXAM. Use your own words and your own ideas. Do not ‘copy and paste’ anything, and cite your sources!

BE AWARE THAT UPLOADING empty or completed EXAM QUESTIONS to sharing websites (e.g. Course Hero, Study Blue) or other students constitutes academic dishonesty, and will be penalized.


• Answer all questions below. Partial credit will be given, so give some answer over no answer.

• Answer each question fully, in your own words, with grammatically correct college level English. I expect organization and paragraph structure.

• If you include diagrams, please label and explain them.

• There is no expected length of an answer, but each answer should not exceed 1 page.

• You are free to use any resource (internet, text, notes, etc.) available to you except other people. I need to see your ability to answer these questions and I cannot help you improve in science if you aren’t being honest.

• Each question is worth 25 points and will be graded using the rubric below.

• This is going to take a lot of time, so start now! If you wait until the last minute, you will not be able to successfully complete this exam.

• You will upload your completed Lab Exam 2 on Canvas, TYPED (no handwritten work accepted). As stated above, it will be subjected to a plagiarism test.

• Create a new document with your answers. DO NOT INSERT YOUR ANSWERS ONTO THIS DOCUMENT! It will get flagged for plagiarism because it will match the original document!

Grading Rubric (25 points per question)

Expectations Points
Format Per question: maximum of 1 page single spaced, normal margins, 12pt font 2 pts
Presentation College level English, grammatically correct

No major spelling errors

Appropriate paragraph structure: introduction, development, conclusion

No rambling, fluff, or restating questions

Label your responses a, b, c, etc.

Commit to your answer: no “might”, “maybe”, or “I think”

3 pts
Content Scientifically and factually accurate

Each question fully addressed: i.e. student followed prompts to compare, contrast, describe, draw, provide examples, etc.

20 pts


1. Conservation biology

(a) Explain how conservation biology can benefit from (1) modelling of population dynamics and (2) understanding of the genetics of the population. Give detailed examples of each to explain.

(b) What is a sensitivity model, and how can it be used to construct a conservation strategy?

2. Applied Molecular Biology

(a) Draw hypothetical phylogenetic trees to illustrate the difference between monophyletic, paraphyletic, and polyphyletic groups. Explain which groups include/don’t include the common ancestor and/or descendants.

(b) Using specific examples, describe how molecular phylogenies can be used to understand complex evolutionary phenomena, such as convergent evolution.

3. Top Down Control

Watch the YouTube video ‘How Wolves Change Rivers and answer the following questions:

(a) How did the reintroduction of wolves to Yellowstone change the behavior of deer?

(b) What was the ecological result of this behavioral change?

(c) Wolves started a cascade (or ‘domino effect’) of events. Outline the sequence of changes that occurred once wolves were reintroduced. (d) How did wolves change rivers?

4. Applied Biogeography

(a) Explain how databases like GBIF use records of species occurrences to map the distribution of invasive species.

(b) How do models of alewife invasions help to answer the question of whether Top-

Down or Bottom-Up control best describe the structure of aquatic communities?

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