Microbiology: A Systems Approach
5th Edition
ISBN: 9781259706615
Author: Marjorie Kelly Cowan Professor
Publisher: McGraw-Hill Education
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Chapter 6.1, Problem 1AYP
Describe the significance of viruses being recognized as “filterable.”
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Molecular Biology Question:
Please help. Thank you
Is Southern hybridization's purpose detecting specific nucleotide sequences? How so?
Use the following information to answer the question(s) below.
Martin Wikelski and L. Michael Romero (Body size, performance and fitness in Galápagos marine iguanas, Integrative and
Comparative Biology 43 [2003]:376-86) measured the snout-to-vent (anus) length of Galápagos marine iguanas and observed
the percent survival of different-sized animals, all of the same age. The graph shows the log snout-vent length (SVL, a
measure of overall body size) plotted against the percent survival of these different size classes for males and females.
Survival (%)
100-
80-
60-
40-
20-
0+
1.9
T
2 2.1
2.2 2.3 2.4 2.5 2.6 2.7
Log SVL (mm)
19) Examine the figure above. What type of selection for body size appears to be occurring in these marine iguanas?
A) directional selection
B) stabilizing selection
C) disruptive selection
D) You cannot determine the type of selection from the above information.
3
24) Use the following information to answer the question below.
Researchers studying a small milkweed population note that some plants produce a toxin and other plants do not.
They identify the gene responsible for toxin production. The dominant allele (T) codes for an enzyme that makes
the toxin, and the recessive allele (t) codes for a nonfunctional enzyme that cannot produce the toxin.
Heterozygotes produce an intermediate amount of toxin. The genotypes of all individuals in the population are
determined (see table) and used to determine the actual allele frequencies in the population.
TT
0.49
Tt
0.42
tt
0.09
Refer to the table above. Is this population in Hardy-Weinberg equilibrium?
A) Yes.
C) No; there are more homozygotes than expected.
B) No; there are more heterozygotes than expected.
D) It is impossible to tell.
Chapter 6 Solutions
Microbiology: A Systems Approach
Ch. 6.1 - Describe the significance of viruses being...Ch. 6.2 - Summarize arguments on both sides of the debate...Ch. 6.2 - Identify effective terms to describe the behavior...Ch. 6.3 - Prob. 4AYPCh. 6.3 - Describe the function and structure(s) of viral...Ch. 6.3 - Distinguish between enveloped and naked viruses.Ch. 6.3 - Prob. 7AYPCh. 6.3 - Compare and contrast the composition of a viral...Ch. 6.3 - Diagram the possible nucleic acid configurations...Ch. 6.4 - Develop two arguments against assigning species...
Ch. 6.4 - Demonstrate how family and genus names in viruses...Ch. 6.5 - Diagram the six-step life cycle of animal viruses.Ch. 6.5 - Define the term cytopathic effect and provide one...Ch. 6.5 - Provide examples of persistent and transforming...Ch. 6.5 - Provide a thorough description of lysogenic and...Ch. 6.6 - List the three principal purposes for cultivating...Ch. 6.6 - Describe three ways in which viruses are...Ch. 6.7 - Prob. 18AYPCh. 6.8 - Analyze the relative importance of viruses in...Ch. 6.8 - Prob. 20AYPCh. 6 - A virus is a tiny infectious a. cell. b. living...Ch. 6 - Viruses are known to infect a. plants. b....Ch. 6 - The nucleic acid of a virus is a. DNA only. b. RNA...Ch. 6 - The general steps in a viral multiplication cycle...Ch. 6 - Prob. 5MCQCh. 6 - In general, RNA viruses multiply in the cell ____,...Ch. 6 - Viruses cannot be cultivated in/on a. tissue...Ch. 6 - Clear patches in cell cultures that indicate sites...Ch. 6 - Label the parts of this virus. Identify the...Ch. 6 - Circle the viral infections from this list:...Ch. 6 - In lysogeny, viral DNA is inserted into the host...Ch. 6 - A viral capsid is composed of subunits called...Ch. 6 - The envelope of an animal virus is derived from...Ch. 6 - The nucleic acid of animal viruses enters the cell...Ch. 6 - Viruses that persist in the (host) cell and cause...Ch. 6 - Provide evidence in support of or refuting the...Ch. 6 - Summarize the unique properties of viruses and...Ch. 6 - Prob. 3CTQCh. 6 - Compare and contrast the processes of latency and...Ch. 6 - Use the Internet to search prion diseases, and...Ch. 6 - From chapter 2, figure 2.23: A virus containing...Ch. 6 - Prob. 1CM
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