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

Question

The one-gene:one-enzyme hypothesis emerged from work on which two organisms?
A) E. coli and yeast
B) Drosophila and humans
C) Neurospora and Drosophila
D) E. coli and humans
E) All of the answers listed are correct.

Accepted Answer

The one-gene:one-enzyme hypothesis emerged from work on Neurospora crassa and Drosophila melanogaster by George Beadle and Edward Tatum in the 1940s. They demonstrated that each gene in Neurospora controlled the production of a specific enzyme, and proposed that this was the case in all organisms.