Experiments using the two mutant strains P and Q, reveal that strain P accumulates citrulline, but strain Q does not. Which of the following statements is most consistent with the data provided? A. Strain Q has only one mutation. B. Strain P has a mutation in argF only. C. Strain P has mutations in argF, argG and argH. D.Strain P has a mutation in argG only. Solutions say Choice C is correct. If strain P accumulates citrulline, doesn't that mean that the ArgF gene is okay as this bacterial mutant strain is able to make citrulline? I thought that the mutation in strain P would be in gene ArgG because it can't convert citrulline to other products in this pathway.

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Mutations Question

Started by vivatix Dec 14, 2015

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vivatix

Full Member

7+ Year Member

Dec 14, 2015

Experiments using the two mutant strains P and Q, reveal that strain P accumulates citrulline, but strain Q does not. Which of the following statements is most consistent with the data provided?

A. Strain Q has only one mutation.
B. Strain P has a mutation in argF only.
C. Strain P has mutations in argF, argG and argH.
D.Strain P has a mutation in argG only.

Solutions say Choice C is correct.

If strain P accumulates citrulline, doesn't that mean that the ArgF gene is okay as this bacterial mutant strain is able to make citrulline? I thought that the mutation in strain P would be in gene ArgG because it can't convert citrulline to other products in this pathway.

Last edited: Dec 14, 2015