Homework # 7
Question 1: Explain the difference between binary fission, mitosis and meiosis. Of the three methods,
which one result in the greatest genetic diversity? Why? Be sure to accompany your explanation with a
clearly labeled diagram.
Question 2: Given the sequence of nucleotides below, write down the
sequence for a. the complementary DNA strand; b. the two mRNA
strands that are formed during transcription; and the peptide (amino
acid) sequence that is formed during translation. You may use the right
to help answer the question.
DNA Sequence: A T G G C C T G G A C T T C A Question 3: Explain the experiment performed by Frederick Griffith discussed in class. What did it
prove? How? Be sure to accompany your explanation with a clearly labeled diagram.
Question 4: Explain the bottleneck effect and how the bottleneck effect can influence genetic diversity.
Question # 5: Explain how concave and convex lenses focus and diffuse light respectively. In your
explanation be sure to make clearly labeled diagrams and refer to the law of refraction.
Question # 6: Explain the shortcomings of Lamark’s theory of evolution and how Darwin’s theory of
Natural selection overcomes those shortcomings.
Question # 7: Explain how Darwin’s observations of the different varieties of Finches on Galapagos
Islands informed his theory of adaptive radiation.
Question # 8: Explain the difference between natural and artificial selection mechanisms. Provide several
examples of each process.
Part 2:
Watch the National Geographic video The History of Earth. You may view it on YouTube using the
following link: https://www.youtube.com/watch?v=RQm6N60bneo. While you watch the video be sure
to take notes, and write down any questions you have.

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