Consider the Following Experiment

question 22

Multiple Choice

Consider the following experiment. First, large populations of two mutant strains of Escherichia coli are mixed, each requiring a different, single amino acid. After plating them onto a minimal medium, 45 colonies grew. Which of the following may explain this result?

• A) The colonies may be due to back mutation (reversion).
• B) The colonies may be due to recombination.
• C) Either A or B is possible.
• D) Neither A nor B is possible.

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Definitions:

Regulatory Restrictions

Legal requirements or constraints imposed by government bodies that limit or regulate business operations or practices.

European Union

A political and economic union of 27 European countries that are tied by common policies on trade, agriculture, laws, and more.

World Recessions

Periods of global economic downturn characterized by a significant decline in activity across economies worldwide.

Economic Conduct

Behaviors and practices of businesses and consumers that are influenced by economic variables such as prices, income, and market trends.