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Unformatted text preview: BIS 1B Midterm 1. Lawler and Kimsey Winter 2007 Questions 1-15: Multiple choice questions (3 points each; total 45 points) Select one best answer and mark the SCANTRON form using a #2 pencil. Be sure to bubble in Form A,and put your name and student ID on the SCANTRON (Also circle the answer on the exam). 1. Choose the answer that best summarizes the most useful of Jean Baptiste de Lamarck's contributions to evolutionary theory. a. Parental traits do not 'blend' in offspring. b. Organisms gradually change in form over long periods of time. c. Organisms can improve traits like height or strength, and pass these changes to offspring. d. He promoted the idea that organisms inherit traits from their parents. e. Both b and d are useful contributions made by Lamarck. 2. What does the sentence mean, that 'All living things are the same evolutionary age'? a. All matter on Earth is the same geological age, therefore all life is the same age. b. All living organisms have arisen from the same number of branches off of the evolutionary 'tree'. c. Because all living creatures share a common ancestor, our genes have been evolving for the same amount of time. d. Although life spans vary among species, compared with the age of the earth all living things are very young. e. The fossil record shows that the diverse forms of modern life arose at the same time in the 'Cambrian Explosion'. 3. Under what circumstances is assortative mating unlikely to change genotype frequencies? a. Organisms have the same genotype. b. Organisms have the same phenotype and different genotypes. c. Organisms have different phenotypes and the same genotypes. d. Organisms have different phenotypes and genotypes. e. a, b, and c are circumstances where assortative mating will not like change genotype frequencies. 4. What are Mendel's Laws? a. Inheritance of traits and trait linkage. b. Segregation of traits and independent assortment. c. Segregation of linkage and trait dominance. d. Multiple alleles per trait and independent assortment. e. Heritable mutations and trait dominance. 5. Under what circumstances are two genes at different loci inherited together?...
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This note was uploaded on 05/26/2008 for the course BIS 1b taught by Professor Kimsey during the Spring '08 term at UC Davis.
- Spring '08