Please Use the Following Information to Answer the Question(s)below

question 22

Multiple Choice

Please use the following information to answer the question(s) below.
In Figure 24.1,data are presented from an eight-year experiment in which 12 populations of Escherichia coli,each begun from a single cell,were grown in low-glucose conditions for 20,000 generations.Each culture was introduced to 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.
Figure 24.1
-If the vertical axis of Figure 24.1 refers to "Darwinian fitness," then which of the following is the most valid and accurate measure of fitness?

• A)number of offspring or close kin that survive to reproductive age
• B)amount of ATP generated per cell per unit time
• C)average swimming speed of cells through the growth medium
• D)amount of glucose synthesized per unit time
• E)number of generations per unit time

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Definitions:

Birth Control

Methods or devices used to prevent pregnancy as part of family planning.

Life Expectancies

The average period that an individual is expected to live, based on statistical averages of age, gender, and other demographic factors.

Birth Rates

The number of live births per thousand people in a population within a given year.

World's Population

The total number of people living on Earth at a given time, continuously changing due to birth rates, death rates, and migration patterns.