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Discussion

Phosphate deregulated mutants are

  • A.less sensitive to phosphate regulation
  • B.moderately sensitive to phosphate regulation
  • C.highly sensitive to phosphate regulation
  • D.none of these

Answer: A

Correct answer: less sensitive to phosphate regulation

A deregulated mutant has lost some part of the control circuit, so its secondary metabolism is less sensitive to repression by phosphate and continues to make product where the wild type would stop. This is why such mutants are selected for industrial production strains.

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