In lieu of a lab quiz, each student needs to write a 1 to 2 page paper that demonstrates his or her understanding of biological evolution by the process of natural selection. Write a paper that is double spaced and has 1â? margins. The document describing this assignment may be found in upload files, I upload the file and screenshot the grading rubric. The story is already provided in docx file. Please please follow the instruction docx & rubric I provide you.
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BIO 182, Gergus
Natural Selection writing assignment, 20 pts.
Due by 8 am, the morning of your lab
Evolution on Evolution Island
Imagine a relatively small, tropical island on which a diversity of plant and animal species live.
As a budding biologist, your Ph.D. advisor at Arizona State University sends you to observe and
document the life history characteristics of the little-known Evolution Island Finch, which is a
unique species found only on Evolution Island.
Upon your arrival, you set to work and find that the birds are very common and widespread on
the island. Food is plentiful, with finches eating a wide range of insect and seed types.
Consequently, the birds were extremely variable with some having long, pointy beaks best suited
to capture insects, and others having short, stubby beaks best suited for seed-eating. The
plumage of most birds was bright green, blending into the vegetation, although a few were a
drab, brownish color. You returned to ASU and received your Ph.D. in Biology for your
thorough and insightful research.
Progressive Developers, Inc., decided to build a luxurious resort on the island, thinking people
would travel from the mainland to enjoy this isolated tropical paradise. When funding fell
through, but after the island was virtually scraped clean of vegetation, the island was deserted
and the ecosystem had been severely altered. The island is now barren, with lots of bare rock
and crevices, very little fertile soil, and very little vegetation, except for some isolated patches of
grass; overall, the island is no longer a lush green, but is instead brown. Insects now survived
and reproduced deep in the cracks and crevices of the bare rocks and dry soil. With so little
remaining vegetation, seeds were hard to come by.
You are now a professor at the University of Arizona, and you return to the island 20 years after
completing your research to discover the relatively barren island with little vegetation. With
very few plants, seeds are rare and insects mostly live amongst rocks and in cracks. To your
surprise, the finch population still exists! However, the birds have characteristics that were
relatively rare or nonexistent in the original population you studied. Very few predators now
exist on the island, although a species of snake with good color vision appeared to be common.
Here is your assignment: Write a paper that is double spaced and has 1â? margins. With respect
to the finches, describe the original and contemporary (describe what would be likely, given the
altered environment) range of traits for each characteristic. Then explain how the population
shifted in each characteristic. In your explanation, be sure to include and discuss all of the
necessary requirements for natural selection, and how the population came to change. Make use
of applicable concepts and vocabulary, such as variability, heritability (or heritable), mutation,
selective pressure, fitness, differential reproductive success (= which process?), etc. Refer to the
question sets from the Natural Selection lab and the rubric given to you for this paper, and make
sure you have answered the relevant questions with respect to this new scenario. Consult your
textbook or other sources, if necessary. Carefully edit your papers to be no more than two pages
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