Read the information below and then answer the questions that follow. In an experiment similar to those by Beadle and Tatum, Neurospora spores were mutated and grown in minimal medium test tubes. Mutants unable to grow without the amino acid "L"were isolated. Compounds A, B, and C are precursors to L.
The following data are generated by providing these compounds to the mutants.
Data:
All strains grow if given compound L.
Strains that grow given compound B also grow if given A or C.
Strains that grow given compound C do not grow if given only B or A.
Strains that grow given compound A will also grow if given C, but not if given only B.
-The compound B requires only one modification, by one enzyme, to be converted to L.

Question

Quizplus · Accepted Answer

The information provided indicates that compound B cannot be the immediate precursor to L that requires only one modification by one enzyme, because strains that can grow with B can also grow with A or C, suggesting a more complex relationship between these compounds and L.

Read the Information Below and Then Answer the Questions That