The one- gene:one- enzyme hypothesis emerged from work on which two organisms?

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The one-gene:one-enzyme hypothesis was first proposed by George Beadle and Edward Tatum in their work with the fungus Neurospora crassa. Their experiments demonstrated that each gene controls the synthesis of a single enzyme, supporting the hypothesis. Later, the hypothesis was expanded to include proteins that are not enzymes, but the initial work was done on Neurospora. Drosophila was also used in their experiments as a model organism.

The One- Gene:one- Enzyme Hypothesis Emerged from Work on Which