Exam 3 version 1 - Name PS ID BIOL 1362 Introduction to Biological Science EXAM 3 Dr Ana Medrano MULTIPLE CHOICE(2 points each unless noted

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V.1 Name: PS ID#: BIOL 1362 - Introduction to Biological Science – EXAM 3 Dr. Ana Medrano 04/08/2009 MULTIPLE CHOICE: (2 points each, unless noted differently) 1. Although Darwin’s voyage aboard the HMS Beagle took him around the world, most of his observations on natural history were made on the continent of _______ and its nearby islands. a. Europe b. North America c. South America d. Asia e. Africa 2. Darwin was influenced by _______ in his recognition that populations of animal and plant species have the potential to expand rapidly, but that in nature, this population growth is usually checked by high death rates. a. Thomas Malthus b. John Henslow c. Alfred Wallace d. Charles Lyell e. Carolus Linneaus 3. Which of the following statements about adaptation is true ? a. Adaptation refers to the characteristics that appear useful to the individuals that have them. b. Adaptation refers to the processes by which useful characteristics evolve. c. Adaptation is a phenotypic characteristic that helps an organism adjust to conditions in its environment. d. All of the above 4. In order for a population to evolve: a. its members must have heritable genetic variation. b. the population must reproduce asexually. c. all members of the population must have identical phenotypes. d. all members of the population must have identical genotypes. 5. The specific form of a character is known as a: a. phenotype. b. genotype. c. trait. d. mutation. e. None of the above 6. Which of the following is true ? a. A given genotype usually cannot produce different phenotypes. b. Genotypes alone determine all phenotypes. c. A particular phenotype can be produced by more than one genotype. d. Dominance makes the study of the genetic basis of natural selection easy. e. None of the above 7. Which of the following is not a main goal of population genetics? a. Explaining the patterns of genetic variation b. Explaining how genotypic information is expressed as phenotypic traits c. Explaining the origins of genotypic variation d. Understanding the mechanisms by which allele frequencies change in populations e. Explaining how genetic variation is maintained 8. Which of the following is true ? a. It is possible to have a negative allele frequency. b. Allele frequencies can be greater than 1 in some populations.
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V.1 c. The sum of all allele frequencies is 0. d. The allele frequency is the number of copies of the allele in the population, divided by the total number (sum) of all alleles in the population. e. None of the above 9. Assuming that there are only two alleles at a given locus (i.e. “B” and “b”), if the frequency of one allele is 0.6, what is the frequency of the other allele? a.
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This note was uploaded on 04/30/2011 for the course BIOL 1362 taught by Professor Loeblich during the Spring '08 term at University of Houston.

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Exam 3 version 1 - Name PS ID BIOL 1362 Introduction to Biological Science EXAM 3 Dr Ana Medrano MULTIPLE CHOICE(2 points each unless noted

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