Handout13 - might explain this discrepancy(Concept Check...

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Bio 311C, Buskirk Handout 13 - Genomes Nov 5, 8 Announcements Exam 3 is Wednesday evening, November 10, 7:00-8:20 pm in JGB 2.324 (same as Exam 1) Buskirk Q&A session, Monday 6-7 pm in PAI 3.02; also at study tables Mon eve: 7:30 JES, 8:30 KIN Lecture on Wed morning - mostly review & synthesis; also short intro to cell signaling (new topic) Reading background: Sections 21.3-21.5 Figures 21. .7, 21.9, 21.10b, 21.13a Learning objectives: 3-67. What is a genome? Explain what three genomes are found in plant cells. [Our cells have two] 3-68. What is the general difference between prokaryotes and eukaryotes in genome size? 3-69. Give a current estimate of the approximate number of genes in the human genome. 3-70. Humans make many more different proteins than their number of genes. What processes
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Unformatted text preview: might explain this discrepancy? (Concept Check 21.3.1) 3-71. Approximately what percentage of the human genome codes for proteins (or rRNA, tRNA)? 3-72. The majority of the human genome consists of DNA in what pattern? Is this coding DNA? 3-73. What is a pseudogene? Give an example of how a pseudogene could develop. 3-74. What is a transposon? A retrotransposon? How do transposons spread through a genome? 3-75. Describe how new genes can form by the combination of gene duplication and mutation. 3-76. What is a multi-gene family? Following Fig 21.13, describe some processes by which the human globin gene families might have evolved from a single ancestral globin. 3-77. Explain how new proteins can evolve over time by “exon shuffling” mutations....
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