EBK LIFE: THE SCIENCE OF BIOLOGY
11th Edition
ISBN: 8220103935432
Author: Sadava
Publisher: MAC HIGHER
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Chapter 1, Problem 5Q
Summary Introduction
To analyze:
The use of the given experiment as a support by the research organization to gain funding. The research proposed by them is the long-term research to develop a continuous pipeline of new drugs and antibiotics.
Given:
In the given experiment, the researchers use a serial transfer for propagating 1,255 population of Escherichia coli in gradually increasing antibiotic (rifampicin) concentration environment.
In the figure B the results of the experiments depicting the percentage of population surviving the antibiotic conditions are shown.
Introduction:
Antibiotic resistance is the phenomena where the bacteria can evade the attack by antibiotics by acquiring drug resistance plasmids and genes through horizontal or lateral gene transfer. The continuous feeding or the gradual increase in antibiotics provides the bacteria a path to accumulate point mutations, undergo genetic recombination and eventually end up becoming a multidrug resistant (MDR) strain.
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Please answer q3
Respond to the following in a minimum of 175 words:
How might CRISPR-Cas 9 be used in research or, eventually, therapeutically in patients?
What are some potential ethical issues associated with using this technology?
Do the advantages of using this technology outweigh the disadvantages (or vice versa)? Explain your position.
You are studying the effect of directional selection on body height in three
populations (graphs a, b, and c below).
(a) What is the selection differential? Show your calculation. (2 pts)
(b) Which population has the highest narrow sense heritability for height?
Explain your answer. (2 pts)
(c) If you examined the offspring in the next generation in each population,
which population would have the highest mean height? Why? (2 pts)
(a)
Midoffspring height (average height of offspring)
Short
Short
Short
Short
(c)
Short
(b)
Short
Tall
Short
Tall
Short
Short
Tall
Midparent height
(average height of
Mean of population = 65 inches
Mean of breading parents = 70 inches
Mean of population = 65 inches
Mean of breading parents = 70 inches
Mean of population = 65 inches
Mean of breading parents = 70 inches
Chapter 1 Solutions
EBK LIFE: THE SCIENCE OF BIOLOGY
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