The Beadle and Tatum experiments were based on all of the following assumptions except that . a. supplemented media permit growth of auxotrophic strains of Neurospora b. two strains of auxotrophic Neurospora that grow on minimal medium supplemented with biotin have mutations in the same gene c. auxotrophs fail to grow on minimal media d. X-irradiation can induce mutations.

b. two strains of auxotrophic Neurospora that grow on minimal medium supplemented with biotin have mutations in the same gene

Explanation:

Beadle and Tatum discovered the existing relationships between molecular biology and genetics. In their experiments, they discovered that new bread mold mutants couldn't synthesize specific aminoacids.

you must remain stopped until the stop signal is retracted and the red lights are turned off. approaching traffic in the opposite roadway of a divided highway shall not be required to stop, even if the school bus has the stop-arm extended and the alternately flashing warning signal lamps on.

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.