Name: ____________________________________ Date: _________________ Block: _____ 1. Explain why acquired characteristics are not inherited. Give one example. 2. What does it mean when someone says that humans and chimpanzees share a more common ancestor than humans and rats? 3. Remember our blue-eyed virus killer. Can the environment change a blue-eyed person into a brown-eyed person? In other words, can the blue-eyed people adapt so that they can survive the killer virus? How does natural selection work in this case? 4. What is the best method for look at phylogeny (assuming living members exist)? 5. Define genetic drift. In what kind of population can this occur? 6. In a population of rabbits, there are 100 rabbits. Black rabbits are dominant to white rabbits. Out of the 100 rabbits, 25 are homozygous black and 50 are heterozygous black. What are the allele frequencies (p and q)? 7. If that population is allowed to mate randomly, predict how many black rabbits there will be when the population reaches 1,000? 2 8. 9. Define and give an example of each of the following: directional selection stabilizing selection disruptive selection sexual selection Define and give an example of each of the following: habitat isolation temporal isolation behavioral isolation gametic isolation mechanical isolation prezygotic isolation postzygotic isolation reduced hybrid viability 3 10. Define allopatric and sympatric speciation. 11. Define convergent and divergent evolution. 12. Define punctuated equilibrium. 13. What was the first genetic material? 14. Describe earth’s early atmosphere. 15. What is a protobiont? 16. What can cells do that protobionts cannot do? 17. What organism is responsible for the oxygen revolution? 18. List the major taxonomic classification levels from most to least comprehensive. 19. Define polyphyletic, paraphyletic, and monophyletic. 4 20. List the following in the order that they occurred according to the fossil record: dinosaurs extinct first animals first dinosaurs first eukaryotes first humans first mammals first multicellular organisms first plants on land first prokaryotes 21. What are the five conditions of Hardy Weinberg? 22. What is the connection between sickle-cell anemia frequency and malaria? What does this do to the prevalence of certain genotypes? 23. List the five agents of microevolution and describe each. 24. Describe the Permian Extinctions (include what type of organisms were affected and possible causes). 5 25. Describe the Cretaceous Extinctions (include what type of organisms were affected and possible causes). Look at the cladogram below and answer the following questions. 26. What are shared derived characteristics called? 27. What different synapomorphy occurs at each point? A B C D E 28. Based on this diagram, to which animal is the leopard most closely related?