9 what are the two main processes that lead to new

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What is a founder population? 9. What are the two main processes that lead to new gene variations? 10. Assume there is a population of moths that either have black or white bodies and the tree barks are darkly colored. Use the four basic ideas of evolution to explain how the gene frequency of the colored moths may change over time. 11. What is meant by the term biological fitness? 12. Can individuals adapt to an environment? Why or why not? 13. Describe an adaptation. Explain how that adaptation enables an organism to survive and/or reproduce. 14. What is sexual selection? How does it relate to natural selection? 15. What is artificial selection?
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Name: ________________________________________________ Period: ____ Date: ___________ 16. Research a specific dog breed. The breeder artificially selected for what types of traits for that breed? 17. What is the purpose of domesticating different dog breeds? IV. Speciation: Read pages 324-330 1. What is the difference between micro and macroevolution? 2. What is speciation? Is that a micro or macroevolutionary event? 3. What factor must occur in order to define two closely related populations as separate species? 4. Punctuated equilibrium and gradualism are ideas about the tempo of speciation. What is the difference between the two ideas? 5. Can both P.E. and gradualism occur within the evolution of a species? Explain.
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Name: ________________________________________________ Period: ____ Date: ___________ 6. Fill in the reproductive isolation chart Reproductive isolation mechanism Pre or Post Reproduction Barrier Example Species occur in different areas separated by a geographic barrier such as a river Two types of grass produce fertile offspring in the first generation, but further generations produce sterile plants A plant releases pollen which reaches the flower of another plant, but is unable to fertilize the ovule (egg) Two populations of bugs with different mating rituals are uninterested in mating with each other Bullfrogs mate in permanent
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