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Step 1. Read why Biology E-text Influenza A: Module 2 and watch lecture videos 3-5
Step 2. Watch the video “Crash Course:Natural selection” that explains the basics of natural section, modes of selection, and Darwins onservations on the Beagle
Step 3. Here is a list of key Words to consider
Natural Selection
adaptation
Charles Darwin
Phenotype
genotype
mutation
evolution
Step 4: Answer the following questions based on your knowledge of natural selection from the readings, lectures, and Crash Course video. Type your answers to each question directly into the text box in Moodle.
1. Define natural selection in your own words. Do not copy from the book or internet. Make a definition that you can understand.
2. How is natural selection different from evolution?
3. List the four principles of natural selection based on Darwin’s observations. Look at Fig. 2.7 and the e-text for more details.
4. Influenza viruses are constantly evolving in the global human population.
4a. What are two ways that the flu virus can evolve?
4b. Why do we need to get a new flu shot (vaccine) every flu season? That is, why can’t we just get one shot and be done with it?
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