01 Exam 1 Key - BIO 311D Exam I Introductory Biology II...

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BIO 311D - Exam I Introductory Biology II Spring 2011 Name: ________________________________________ EID:_________________ Using a pencil, select the best answer for the following questions and fill in the corresponding bubble on the answer sheet. Use PEN for the short answer and essay (if you wish to be considered for regrade-ing). You have 50 minutes. Take a deep breath – and Good Luck!! Multiple Choice (2.5pts each) 1. ‘Alternation of generations’ describes a life-cycle in which: A. asexual reproduction produces offspring that are genetically identical to the parents B. an organism spends part of its life-cycle in a multi-cellular haploid state C. gametes result from mitotic divisions D. one generation is diploid, while the next generation is haploid E. Both B and C 2. How do the two members of a pair of homologous chromosomes differ from each other? A. their length B. the precise sequence of the DNA within each of the chromosomes C. the relative position of the genes present on each of the chromosomes D. the identity of the genes present on each chromosome 3. If a dominant allele of one gene, A, is necessary for hearing in humans, and the dominant allele of another gene, B, results in deafness regardless of the presence of other genes, what fraction of offspring in a marriage of AaBb and Aabb individuals will be deaf? A. 1/2 B. 3/4 C. 1/8 D. 1/16 4. What is the term that is defined by the interaction of the genes described in #3? A. co-dominance B. epistasis C. incomplete dominance D. hybrid vigor 5. During meiosis, two genes carried on non-homologous chromosomes are randomly separated into gametes. Mendel recognized this as: A. The Law of Segregation B. The Law of Independent Assortment C. Crossing over events D. Random mating 6. The similarity in body morphology between sharks and dolphins is due to: A. the fact that sharks and dolphins have a common ancestor B. convergent evolution C. the effects of natural selection in a aqueous environment D. all of the above E. both B and C 1
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BIO 311D - Exam I Introductory Biology II Spring 2011 7. After careful analysis of a patient’s genome and symptoms, you diagnose the patient as having Kleinfelter’s Syndrome. Which of the following information would lead you to that conclusion? A. The presence of two Barr bodies in each body cell B. The presence of only one X chromosome in each body cell C. The presence of two Y chromosomes in each body cell D. The presence of one Barr body in each body cell 8. A patient suffering from sickle cell anemia has multiple symptoms, from shortness of breath to problems with blood clotting. What term describes this relationship between genotype and phenotype? A. Epistasis B. Pleiotropy C. Polygenic inheritance D. Multiple alleles at a single locus 9. As we talked about in class, there are many ways of defining a species. The biological concept of species is defined by A. reproductive isolation of two populations B. morphological differences between two populations
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01 Exam 1 Key - BIO 311D Exam I Introductory Biology II...

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