Lenski and Travisano Compared What Happened to the Fitness of Cells

question 9

Multiple Choice

Lenski and Travisano compared what happened to the fitness of cells in 12 replicate lines of E.coli.According to the graphs above,which of the following statements is (are) true?

• A)After only 500 generations, natural selection had already increased fitness in the evolving strains.
• B)Average fitness decreased substantially over the first 2000 to 3000 generations.
• C)Average fitness increased substantially over the first 2000 to 3000 generations.
• D)A and B
• E)A and C

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Definitions:

Capital Intensity Ratio

A measure of how much capital is required to produce one unit of output, indicating the extent of capital employed in production.

Net Fixed Assets

The value of a company's property, plant, and equipment minus depreciation, representing the actual worth of these assets to the business.

Total Assets

The sum of all current and long-term assets owned by a company, reflecting the total resources at its disposal.

Internal Growth Rate

The maximum growth rate a company can achieve with its existing assets without having to finance growth with external equity or debt.