Consider the Following Experiment

question 61

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

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Definitions:

AQL

Acceptable Quality Level, a statistical measurement used in quality control that defines the maximum number of defective items allowed in a sample lot.

Type II Error

Statistically, the probability of accepting a bad lot.

Bad Lot

A batch of products that fails to meet quality specifications or standards, often leading to rejection or rework.

LTPD

The Lot Tolerance Percent Defective, which refers to the maximum acceptable defect rate in a sample lot for the lot to be accepted.