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Read Lamarck pg. 12-13
1) What are the two forces that push evolution, according to Lamarck?
2) Summarize the idea that Lamarck proposed, which Darwin and most scientists believed to be true.
3) Read the section entitled Feeling the Way Forward on snails. How did Lamarck explain the evolution of feelers in snails?
4) Read the section entitled Passing it on. Think of another example of an acquired trait like tan skin that does not pass to children.
Read Variation and Inheritance Pg. 32-33
5) What evidence did plant and animal breeders give Darwin?
6) Read the section entitled Changing Butterfly. Global climate change is causing the habitat of this butterfly to warm. Too much heat absorbed by insects over a long period of time can lead to death. Predict which variation of butterfly will become more common.
7) Read the section entitled Mutant Teasel Explain how variation occurs.
In which cells must the mutations occur?
Not all mutations have the same end result. What types of mutations does natural
selection work on?