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3. Your study partner says the following statements. Help your study partner by identifying any misconceptions and improving the statements. Limit: 2 sentences per statement.

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3. Your study partner says the following statements. Help your study partner by identifying any misconceptions and improving the statements. Limit: 2 sentences per statement. A. \"Evolution is 'just' a theory." B. \"Evolutionary theory implies that life evolved (and continues to evolve) randomly, or by chance." C. \"Natural selection gives organisms what they need.\" 4. Read (not memorize) \"Sexual Selection for Male Sacrice in the Australian Redback Spider\" by Maydianne C. B. Andrade (Science 1996 271:70-72) (available on our course website. under Home). Note: This problem highlights the central role of well-formulated hypotheses in experiments and provides opportunities to apply your knowledge of both hypothesis testing and evolutionary biology. While observing mating redback spiders. you notice that the male somersaults his abdomen into the jaws of the female after he initiates sperm transfer via appendages near his head. You also notice that the spiders continue to mate while the female eats the male. How could this behavior benefit the male evolutionarily?' A. In her research paper. Dr. Maydianne C. B. Andrade tests three different hypotheses. Hint: These hypotheses provide potential answers to the question from our \"Formulating Hypotheses - Evolution" activity. In addition, the hypotheses are relatively uncomplicated. What are the three hypotheses? Based on the evidence in the research Limit: 1 sentence per hypothesis paper does Dr. Andrade eliminate or su ort the hypothesis? B. From the research paper: "Facilitation of sexual cannibalism may evolve as an adaptive male strategy if the benefits of being eaten in a given mating exceed the male's expected future reproductive value." Why is \"the male's expected future reproductive value\" low for redback spiders? Limit: 1 sentence. C. Assuming that the male redback spider does not understand evolutionary theory, what causes him (as an individual) to perform the somersaulting behavior? Hint: Remember Darwin's second postulate. Limit: 1 sentence. 5. Depending on the context, gene flow could decrease or increase fitness. A. Exglain how gene flow could decrease fitness. Address at least one evolutionary mechanism in addition to gene flow. Limit: 2 sentences. B. Exglain how gene flow could increase fitness. Address at least one evolutionary mechanism in addition to gene flow. Limit: 2 sentences

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