Genetics: Analysis and Principles
Genetics: Analysis and Principles
6th Edition
ISBN: 9781259616020
Author: Robert J. Brooker Professor Dr.
Publisher: McGraw-Hill Education
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Chapter 7.4, Problem 1COMQ
Summary Introduction

Introduction:

The process of introduction of foreign DNA (deoxyribonucleic acid) from a bacterial cell to another bacterial cell with the help of a viral vector, is known as transduction. Such kind of gene transfer is a type of horizontal gene transfer.

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The contents of a plaque may not always contain a clonal population of phage if: a. Identical phages from a neighboring plaque diffuse into the original plaque b. The bacteria run out of resources too quickly and limit phage growth c. Different phages from a neighboring plaque diffuse into the original plaque d. All plaques on the plate originated from a pure phage culture
Some strains of Escherichia coli bacteria have acquired the ability to produce the harmful Shiga toxin, normally produced by Shigella dysenteriae. Which statements best explain why this occurs? Mark all that apply.   A. conjugation between two different species of bacteria allowed both strains of bacteria to express a virulence factor B. transformation resulted in expression of a virulence factor C. horizontal gene transfer between different species of bacteria D.  transduction of a specific gene resulted in expression of new traits
In Hershey and Chase’s experiment investigating which biological molecule carries genetic information, they found that phage DNA with radiolabeled phosphorus was retained in bacterial cells after transduction. To conclude that DNA is the genetic material, what assumption did they have to make? (photo linked)     A. Protein does not enter the bacterium during transduction.   B. DNA does not stay in the media after transduction.   C. All of the phage DNA was radiolabeled.   D. Bacteria can be transduced by phage.

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Genetics: Analysis and Principles

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genetic recombination strategies of bacteria CONJUGATION, TRANSDUCTION AND TRANSFORMATION; Author: Scientist Cindy;https://www.youtube.com/watch?v=_Va8FZJEl9A;License: Standard youtube license