The following questions refer to the information and figure below. Experimental populations (average) 1.8- 1.6- 1.4- 1.2 /Ancestral population 1.0 5000 10 000 15 000 20 000 Generation In this eight-year experiment, 12 populations of E. coli, each begun from a single cell, were grown i low-glucose conditions for 20 000 generations. Each culture was introduced to a fresh growth medium every 24 hours. Occasionally, samples were removed from the populations, and their fitness in low-glucose conditions was tested against that of members sampled from the ancestral (common ancestor) E. coli population. Which of the following is less likely to promote bacterial survival over evolutionary time in a low- glucose environment? Increased sensitivity to, and ability to move toward, whatever glucose is present in its habitat Increased ability to synthesize glucose from amino acid precursors Increased efficiency at transporting glucose into the cell from the environment Increased ability to survive on simple sugars other than glucose Increased reliance on glycolytic enzymes Population growth rate (relative to ancestral population)
The following questions refer to the information and figure below. Experimental populations (average) 1.8- 1.6- 1.4- 1.2 /Ancestral population 1.0 5000 10 000 15 000 20 000 Generation In this eight-year experiment, 12 populations of E. coli, each begun from a single cell, were grown i low-glucose conditions for 20 000 generations. Each culture was introduced to a fresh growth medium every 24 hours. Occasionally, samples were removed from the populations, and their fitness in low-glucose conditions was tested against that of members sampled from the ancestral (common ancestor) E. coli population. Which of the following is less likely to promote bacterial survival over evolutionary time in a low- glucose environment? Increased sensitivity to, and ability to move toward, whatever glucose is present in its habitat Increased ability to synthesize glucose from amino acid precursors Increased efficiency at transporting glucose into the cell from the environment Increased ability to survive on simple sugars other than glucose Increased reliance on glycolytic enzymes Population growth rate (relative to ancestral population)
Chapter10: Reconstitution Of Powdered Drugs
Section: Chapter Questions
Problem 8.5P
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Transcribed Image Text:The following questions refer to the information and figure below.
Experimental
populations (average)
1.8 -
1.6
1.4
1.2 -
Ancestral population
1.0
5000
10 000
15 000
20 000
Generation
In this eight-year experiment, 12 populations of E. coli, each begun from a single cell, were grown in
low-glucose conditions for 20 000 generations. Each culture was introduced to a fresh growth
medium every 24 hours. Occasionally, samples were removed from the populations, and their
fitness in low-glucose conditions was tested against that of members sampled from the ancestral
(common ancestor) E. coli population.
Which of the following is less likely to promote bacterial survival over evolutionary time in a low-
glucose environment?
Increased sensitivity to, and ability to move toward, whatever glucose is present in its habitat
Increased ability to synthesize glucose from amino acid precursors
Increased efficiency at transporting glucose into the cell from the environment
Increased ability to survive on simple sugars other than glucose
Increased reliance on glycolytic enzymes
Population growth rate
(relative to ancestral population)
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