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Transduction

Recombination

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Biology
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microbiology
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Transduction
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Mechanisms of Bacterial Genetic Recombination Genetic Transfer Genetic transfer is the mechanism by which DNA is transferred from a donar to a recipient. In bacteria genetic transfer can happen three ways: Transformation Transduction Conjugation A recombination event must occur after transfer in order that the change in the genome be heritable (passed on to the next generation). Transformation After death or cell lyses, some bacteria release their DNA into the environment. Other bacteria, generally of the same species, can come into contact with these fragments, take them up and incorporate them into their DNA by recombination. This method of transfer is the process of transformation. Any DNA that is not integrated into the chromosome will be degraded.

Genetics of Viruses and Bacteria

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Biology
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microbiology
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Bacteriophages
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Chapter 18: Genetics of Viruses and Bacteria Concept 18.2 is not required knowledge for the AP Exam and has been intentionally omitted. Overview: Microbial Model Systems viruses called bacteriophages can infect and set in motion a genetic takeover of bacteria E. coli and its viruses are called model systems because of their frequent use by researches in studies that reveal broad biological principles beyond their value as model systems, viruses and bacteria have unique genetic mechanisms that are interesting in their own right bacteria are prokaryotes with cells much smaller and more simply organized than those of eukaryotes viruses are smaller and simpler still Concept 18.1: A virus has a genome but can reproduce only within a host cell

AP Bio Campbell 7E Chapter 18 Test Bank

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Lac operon
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Ch 18 Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. ____ 1. Which of the following is (are) true about viruses? a. Viruses are classified below the cellular level of biological organization. b. A single virus particle contains both DNA and RNA. c. Even small virus particles are visible with light microscopes. d. Only A and B are true. e. A, B, and C are true. ____ 2. Which of the following is not a reason scientists suspected that something other than bacteria was the cause of tobacco mosaic disease? a. Passing infectious sap through a fine filter failed to remove the infectious agent. b. Treating infectious sap with alcohol failed to remove the infectious agent. c.
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