Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 17, Problem 11TYK
Summary Introduction
To explain:
The reason for the existence of bacterial cells that can grow on a media without requiring threonine, leucine, or biotin and yet requiring methionine.
Introduction:
Lederberg and Tatum experimentally proved that a transformation occurs in the bacterial genome. They did so by placing bacterial cells that require different nutrients to survive on minimal media (media lacking essential nutrients). Some of the colonies from these mixtures, when placed on minimal media, were able to grow without any addition of nutrients. By this experiment, they concluded that genetic recombination had taken place that created new gene combinations capable of synthesizing all nutrients.
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Chapter 17 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 17.1 - What are the properties of F+, F-, and Hfr cells...Ch. 17.1 - Prob. 2SBCh. 17.2 - Prob. 1SBCh. 17.2 - How does viral infection of an animal cell and a...Ch. 17.2 - Prob. 3SBCh. 17.3 - Prob. 1SBCh. 17 - Prob. 1TYKCh. 17 - Prob. 2TYKCh. 17 - Which of the following is not correct for...Ch. 17 - Prob. 4TYK
Ch. 17 - Prob. 5TYKCh. 17 - Prob. 6TYKCh. 17 - When a virus enters the lysogenic stage: a. the...Ch. 17 - An infectious material is isolated from a nerve...Ch. 17 - Prob. 9TYKCh. 17 - Prob. 10TYKCh. 17 - Prob. 11TYKCh. 17 - Discuss Concepts As a control for their...Ch. 17 - Prob. 13TYKCh. 17 - Prob. 14TYKCh. 17 - Prob. 15TYKCh. 17 - Prob. 1ITD
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- The words “transcribe” and “translate” are more commonly associated with language and dialogue. For example, a court reporter may transcribe what was said during a trial, or a popular book may be translated from Spanish into English. Why are “transcription” and “translation” such good descriptors for these processes in molecular biology?arrow_forwardConsidering the proclivity of bacteria to share genetic information, discuss the concerns behind phenomena such as antibiotic resistance. In other words, why might it be a bad idea to not finish your antibiotic therapy as prescribed by your physician? Some people think that "saving some for later" is a good idea. Why might that not be the case?arrow_forwardIf you are given a sample of chromosomal DNA, what experiment could you perform to determine whether the DNA is prokaryotic or eukaryotic? What would your hypothesis be and describe how your expected results would be supported or not supported?arrow_forward
- A researcher sequences the genome of a variety of bacterial and eukaryotic cells. She finds that the bacterial genome is smaller, but that there are more genes for a given number of base pairs in the eukaryotic cells. In other words, there are fewer genes per unit of length of DNA in the eukaryotic cells. What do you predict she will find if she examines the DNA more closely? A. All of the bacterial DNA consists of coding sequences, but this is not true of the eukaryotic DNA. B. There are more repetitive sequences in the eukaryotic DNA than in the bacterial DNA. C. There are densely packed genes in the eukaryotic DNA that were not immediately distinguishable during the first analysis. D. The bacteria have larger quantities of noncoding DNA than the eukaryotic cells.arrow_forwardSeveral experiments aided the discovery of DNA being the inheritable material. Which of the following experiments clearly demonstrated DNA, not protein, was the inheritable material?arrow_forwarddescribe one experiment that helped solve the puzzle concerning the nature of the genetic materialarrow_forward
- What results would you expect if the bacteriophage that Hershey and Chase used in their experiment had contained RNA instead of DNA?arrow_forwardDescribe the experiments that proved DNA to be themolecule at the basis of heredity.arrow_forwardModel organisms are those widely used by researchers who wish to understand basic processes that are common to many species. Bacteria such as Escherichia coli are model organisms for modern geneticists. Give three reasons why bacteria would be useful in genetic experiments.arrow_forward
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