If a Strain of Neurospora Is Unable to Grow on Minimal

question 145

Multiple Choice

If a strain of Neurospora is unable to grow on minimal medium but can grow when substance A is added to minimal medium, then

• A) the strain is wild type.
• B) the strain lacks the enzyme or enzymes needed to break down substance A.
• C) the strain lacks the enzyme or enzymes needed to synthesize substance A.
• D) substance A must be an enzyme.
• E) substance A must be a mutagen.

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