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Class 12 Biology Chapter 7 Evolution Quiz 6 (60 MCQs)

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1. ..... is the process by which organisms that are most suited to their environment survive and reproduce most successfully; also called survival of the fittest
2. What type of selection is happening when the average phenotype is selected?
3. The wings of a bird and the wings of a beetle are considered .....
4. What are homologous structures?
5. A rather large population of foxes has 555 individuals with tan fur and 390 individuals with red fur. Assume that red is recessive. What should you try to start with?
6. Antibiotic resistant bacteria, especially MRSA, are becoming more frequent. Which of the following is responsible for this event?
7. Developed theory of acquired characteristics
8. A physical or behavioral trait that helps an organism survive and reproduce in its environment is called a what?
9. During a biology field trip, Mark and Khalila learned about a species whose presence or absence can indicate the health of an ecosystem. What is this type of species called?
10. Which of the following is not in Hardy-Weinberg equation?
11. British naturalist who published "On the Origin of Species by Natural Selection" in 1859
12. Dolphins have the same arm structure as wolfs, what type of evidence for evolution does this represent?
13. In South America, Darwin found fossils of extinct armadillos that resembled armadillos living in the area at that time. This provided evidence for Darwin that species change over long periods of time. This was similar to which other scientist's idea on how species evolved due to geological changes?
14. Which of the following scenarios BEST illustrates that two organisms likely share a common ancestor?
15. The Hardy-Weinberg Model is?
16. Homologous Structures
17. Which of the following is an example of the bottle neck effect?
18. This is a structure that was inherited but has lost most of its original function
19. Artificial Selection
20. Genetic drift is change in the allele frequency of a population due to .....
21. In natural selection, the selective agent is the
22. High fitness individuals in a population:
23. Way back when, some important scientists studied the Earth and concluded .....
24. All of the alleles in all the individuals that make up a population's fitness
25. How do fossils demonstrate evidence of evolution?
26. Each of the following is a condition necessary for natural selection to occur EXCEPT .....
27. What happens if a species does not evolve?
28. Developed theory of Natural Selection
29. Relating or denoting to the most recent era
30. Comparative Anatomy
31. Which of the following is an example of a homologous structure that provides evidence for evolution?
32. A structure that serves the same purpose, but is not made in the same way is called
33. Preserved remains of once-living organisms
34. Which describes an African butterfly species that exists in two strikingly different color patterns?
35. Comparative ..... is the study of the similarities and differences in the structures of different species.
36. What is the primary mechanism that drives evolution according to Charles Darwin's theory?
37. In the reducing atmosphere of earth, ..... was absent.
38. Genome maps provide the DNA sequences of chromosomes. Some scientists have compared the genome maps of a hedgehog and a sloth. What do these genome maps allow the scientists to determine?
39. What is suggested by the similarity of early embryos of different species of vertebrates?
40. Extinction can occur because of which of the following?
41. Charles Darwin's theory of evolution by natural selection explains each of the following EXCEPT how .....
42. Certain viruses or bacteria can integrate their DNA into the host cell's genome, leading to mutations.
43. A change in the frequency of existing genes due to a random event/change
44. The allele frequency of p=.20 What is the frequency of the heterozygous genotype?
45. This is the variation of living organisms.
46. All vertebrates have this structure which indicates that they are evolved from a distant same ancestor
47. In the essay On population the authors states that this keeps populations in check by killing off the weakest members.
48. The process where organisms best fit for the environment are more likely to survive and reproduce.
49. Using changes in DNA sequences to determine evolutionary changes over time
50. Which of the following is an example of a keystone species?
51. This term describes a trait shared by organisms with a common ancestor that is similar in structure and function.
52. Which of the following best describes the biological species concept?
53. Which of the following is an example of competition among bearded dragons?
54. Structures with reduced size and lesser function or no function.
55. Which of the following is an example of an adaptation that has evolved in response to environmental pressures?
56. What's so important about gene duplication?
57. How does gene flow affect population genetics?
58. What genetic change allows organisms to survive natural selection in their environments?
59. The first cells on Earth were likely to be:
60. Which of the following is evidence of a common ancestor?
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