The Following Questions Refer to Figure 27.1

question 23

Multiple Choice

The following questions refer to Figure 27.1.
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 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 27.1
-If new genetic variation in the experimental populations arose solely by spontaneous mutations, then the most effective process for subsequently increasing the prevalence of the beneficial mutations in the population over the course of generations is

• A) transduction.
• B) binary fission.
• C) conjugation.
• D) transformation.
• E) meiosis.

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Definitions:

Qualitative Studies

Research methodologies that focus on understanding phenomena through in-depth investigation and analysis of how individuals perceive and experience their lives, avoiding numerical data.

Types of Analysis

Refers to the various methodologies used in research and examination, such as statistical, qualitative, quantitative, and comparative analysis.

Hawthorne Effect

The effect of the research process itself on the groups or individuals being studied; hence, the act of studying them often itself changes them.

Originated

Refers to the point or place where something begins or is created.