Which One of the Following Contributes to the Utility of the Strains

question 9

Multiple Choice

Which one of the following contributes to the utility of the strains of Salmonella typhimurium used in the Ames reversion assay?

• A)They are highly permeable to test substances.
• B)They are defective in DNA repair and,therefore,cannot readily repair damage done by the test substances.
• C)It is very straightforward to assay the conversion of their histidine auxotrophy mutations to histidine prototrophy.
• D)all of the choices

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Professionals who develop strategies for organizations, focusing on long-term goals and competitive positioning.

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