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Define pre-zygotic and post-zygotic reproductive isolation

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Question 1 . What is the relative importance allopatric versus sympatric speciation? In your answer, describe the rationale for why one mode is more likely to occur versus the other as well as the relative difficulties in collecting evidence for historical speciation events.

Question 2. Define pre-zygotic and post-zygotic reproductive isolation. What are the challenges involved in identifying the mechanism the mechanism responsible for a speciation event?

Question 3. What is a Dobzhansky-Muller incompatibility?

Question 4. What concern does Orr raise with respect to studying existing D-M incompatibilityes between lineages, when trying to identify the initial mechanisms of driving speciation?

Question 5. What is Haldane's Rule and the large X-effect, and how do they relate to the concept of speciation?

Question 6. Is natural selection required for speciation in allopatry? What about in sympatry? Be specific about the role of natural selection (or its absence) in these two modes of speciation.

Question 7. What is some evidence for the role of sexual selection in speciation?

Question 8. What is reinforcement? Describe an open question or controversy surrounding the concept of reinforcement.

Reference no: EM133302113

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