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NS 1021A: Introduction to Biology: Organisms and the Environment

Summer '08 Syllabus: Day 11
Tuesday, July 15

In-Class:

Homework:


For Tuesday, July 15
Read ch. 2.1-2.5, pages 21-30; ch. 13.1-13.2, pages 269-275.

Answer the following questions (also available as a Word document in the class shared folder):

  1. Who was Charles Darwin?
     
  2. Explain two pieces of evidence which Darwin saw.
     
  3. State in your own words the six steps of natural selection.
     
  4. How is natural selection similar to artificial selection? How is it different from artificial selection?
     
  5. What is the difference between macroevolution and microevolution?
     
  6. What is the source of variation in a species which can then lead to natural selection?
     
  7. The human arm and the forelimb of a horse are homologous structures.  What does this mean?

Blood Typing lab due


For Wednesday, July 16
Read ch. 13.3-13.4, pages 276-279.

Answer the following questions (also available as a Word document in the class shared folder):

  1. Explain the concept of allele frequencies.
     
  2. What are the five assumptions of the Hardy-Weinberg rule?
     
  3. List the five major reasons why allele frequencies change.

Meet with group to start work on Evolution Time Line section.

Questions from Human Variation lab/activity due

Work on Position Paper (due Friday, 7/18)

For Thursday, July 17
Read ch. 13.5-13.11, pages 280-291.

Answer the following questions (also available as a Word document in the class shared folder):

  1. List the three major forms of selection.   Which of these forms of selection appears that it would allow for the formation of two distinct species from one original species?
     
  2. Why did sickle cell anemia become common in Africa?
     
  3. What is the biological species concept?  Try to explain it in your own words.
     
  4. List the six types of prezygotic isolating mechanisms.
     
  5. What is the difference between prezygotic and post zygotic isolation?
     
  6. What is the difference between allopatric and sympatric speciation?
     
  7. Explain the ideas of gradualism and punctuated equilibrium.

Meet with group to start work on Evolution Case Studies.

Test 2 questions 1 and 2 (10 points total) due (see below)

Work on Position Paper (due Friday, 7/18)
 

Test 2 question 1:

Due Thursday, July 17
6 points.
  • Choose a type of evidence for evolution from the list below, or choose your own.
    1. explain how this supports evolution
    2. Give an example
  Transitional forms in fossils
Patterns of development
 Homologous structures
DNA evidence
Similar movement in living organisms

Test 2 question 2:

Due Thursday, July 17
4 points.
  • Compare and contrast artificial and natural selection.
 

Vocabulary:

allele frequency
Hardy-Weinberg equilibrium
mutation
migration
genetic drift
founder effect
bottleneck effect
nonrandom mating
inbreeding
selection
 

   

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