The Following Questions Refer to Figure 27.1

question 3

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
-Which term best describes what has occurred among the experimental populations of cells over this eight-year period?

• A) microevolution
• B) speciation
• C) adaptive radiation
• D) sexual selection
• E) stabilizing selection

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Definitions:

Tangible Costs

Explicit expenses or outlays that are easily quantifiable and often involve monetary transactions, such as equipment purchases, rent, and salaries.

Intangible Costs

Expenses or costs that are not easily quantifiable, including things like brand value, intellectual property, or goodwill.

Variable Costs

Costs that change in direct proportion to sales.

Price Elastic

Refers to how sensitive the demand for a product is to changes in its price; high elasticity indicates demand significantly changes with price adjustments.