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Understanding Evolution : Personal response question

Understanding Evolution : Personal response question. Mutation is a random process. a. agree b. disagree.

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Understanding Evolution : Personal response question

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  1. Understanding Evolution : Personal response question • Mutation is a random process. a. agree b. disagree Ribozyme structure comes from Scott, W.G., Finch, J.T., Klug, A. (1995) The crystal structure of an all-RNA hammerhead ribozyme: a proposed mechanism for RNA catalytic cleavage. Cell 81: 991-1002

  2. Understanding Evolution : Personal response question Which one of the following statements is accurate? a. Natural selection works on variation already present in a population. b. Natural selection works on non-heritable traits. c. Individuals evolve through natural selection. d. Organisms evolve structures that they need. e. None of the statements are true. Ribozyme structure comes from Scott, W.G., Finch, J.T., Klug, A. (1995) The crystal structure of an all-RNA hammerhead ribozyme: a proposed mechanism for RNA catalytic cleavage. Cell 81: 991-1002

  3. Understanding Evolution : Personal response question Some head lice are now resistant to all commonly used pesticide shampoos used to kill them. Which is the better explanation for this observation? a. Frequent contact with pesticide shampoos caused mutations that allowed the lice to become resistant so resistant lice became more and more common. b. Some lice carried genes for resistance to the pesticide before contact with the shampoos and their numbers increased after lice shampoos became common. Ribozyme structure comes from Scott, W.G., Finch, J.T., Klug, A. (1995) The crystal structure of an all-RNA hammerhead ribozyme: a proposed mechanism for RNA catalytic cleavage. Cell 81: 991-1002

  4. Understanding Evolution : Personal response question The more we expose bacteria to antibiotics, the harder they will try to adapt. a. agree b. disagree Ribozyme structure comes from Scott, W.G., Finch, J.T., Klug, A. (1995) The crystal structure of an all-RNA hammerhead ribozyme: a proposed mechanism for RNA catalytic cleavage. Cell 81: 991-1002

  5. Understanding Evolution : Personal response question Which statement describes the swallow with the greatest evolutionary fitness? a. A swallow that lives to be 3 years old and has four offspring, two of which survive to reproduce themselves b. A swallow that lives to be 5 years old and has five offspring, one of which survives to reproduce c. A swallow that lives to be 2 years old and has four offspring, all of which survive to reproduce themselves d. A swallow that lives to be 7 years old and has three offspring, all of which survive to reproduce e. All are equally fit Ribozyme structure comes from Scott, W.G., Finch, J.T., Klug, A. (1995) The crystal structure of an all-RNA hammerhead ribozyme: a proposed mechanism for RNA catalytic cleavage. Cell 81: 991-1002

  6. Understanding Evolution : Personal response question Only the strongest and healthiest individuals in a population will survive to reproduce. a. agree b. disagree Ribozyme structure comes from Scott, W.G., Finch, J.T., Klug, A. (1995) The crystal structure of an all-RNA hammerhead ribozyme: a proposed mechanism for RNA catalytic cleavage. Cell 81: 991-1002

  7. Understanding Evolution : Personal response question Genetic drift occurs in all populations, all the time. a. agree b. disagree Ribozyme structure comes from Scott, W.G., Finch, J.T., Klug, A. (1995) The crystal structure of an all-RNA hammerhead ribozyme: a proposed mechanism for RNA catalytic cleavage. Cell 81: 991-1002

  8. Understanding Evolution : Personal response question Genetic analysis of a large population of mink inhabiting an island in Michigan revealed a surprising large number of loci with a fixed allele—that is, loci without any genetic variation in the population. Which of the following is the most probable explanation for this genetic homogeneity? a. The population exhibited nonrandom mating, producing homozygous genotypes. b. The gene pool of this population never experienced mutation or gene flow. c. A very small number of mink may have colonized this island, and this founder effect and subsequent genetic drift fixed many alleles. d. The colonizing population may have had much more genetic diversity, but in the last year or two, genetic drift fixed these alleles by chance. Ribozyme structure comes from Scott, W.G., Finch, J.T., Klug, A. (1995) The crystal structure of an all-RNA hammerhead ribozyme: a proposed mechanism for RNA catalytic cleavage. Cell 81: 991-1002

  9. Understanding Evolution : Personal response question A class of 100 students was tested for the ability to taste phenylthiocarbamide (PTC). It was found that 50 students could taste it very strongly (genotype TT), 20 students could taste it weakly (genotype Tt), and 30 students could not taste PTC at all (genotype tt). What is the frequency of the recessive allele, t, in the population? a. 0.40 b. 0.50 c. 0.60 d. 0.80 Ribozyme structure comes from Scott, W.G., Finch, J.T., Klug, A. (1995) The crystal structure of an all-RNA hammerhead ribozyme: a proposed mechanism for RNA catalytic cleavage. Cell 81: 991-1002

  10. Understanding Evolution : Personal response question Which of the following phylogenies is currently best supported by available evidence? Ribozyme structure comes from Scott, W.G., Finch, J.T., Klug, A. (1995) The crystal structure of an all-RNA hammerhead ribozyme: a proposed mechanism for RNA catalytic cleavage. Cell 81: 991-1002

  11. Understanding Evolution : Personal response question Which taxon on the tree below is most advanced/specialized? A B C D None of the above Ribozyme structure comes from Scott, W.G., Finch, J.T., Klug, A. (1995) The crystal structure of an all-RNA hammerhead ribozyme: a proposed mechanism for RNA catalytic cleavage. Cell 81: 991-1002

  12. Understanding Evolution : Personal response question Which taxon on the tree below is most closely related to taxon A? B C D All of the above areequally closely related to A Ribozyme structure comes from Scott, W.G., Finch, J.T., Klug, A. (1995) The crystal structure of an all-RNA hammerhead ribozyme: a proposed mechanism for RNA catalytic cleavage. Cell 81: 991-1002

  13. Understanding Evolution : Personal response question Which taxon on the tree below is most closely related to taxon C? A B D B and D areequally closely related to C All of the above areequally closelyrelated to C Ribozyme structure comes from Scott, W.G., Finch, J.T., Klug, A. (1995) The crystal structure of an all-RNA hammerhead ribozyme: a proposed mechanism for RNA catalytic cleavage. Cell 81: 991-1002

  14. Understanding Evolution : Personal response question Which taxon on the tree below is most closely related to taxon D? A B C All of the above areequally closelyrelated to D Ribozyme structure comes from Scott, W.G., Finch, J.T., Klug, A. (1995) The crystal structure of an all-RNA hammerhead ribozyme: a proposed mechanism for RNA catalytic cleavage. Cell 81: 991-1002

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