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2. Over time, insects can become more resistant to insecticides. What type of selection would this be? (directional, stabilizing, or disruptive)
3. How can gene flow increase genetic variation?
4. What are the three barriers that can cause populations to become isolated?
5. There are about 40 species of Hawaiian honeycreeper, which scientists think evolved from a common ancestor. They have many different beak types, songs, and nesting behaviors. What types of selection or isolation do you think helpedcreate these species?
6. What type of selection would be the opposite of stabilizing selection? Why?
7. Explain how genetic drift occurs through chance.
8. Why must allele frequency always add up to 100%?
9. How are natural and sexual selection similar and different?
10. Explain why mutation and genetic drift are random events but natural selection is not random.
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