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Francesco Paucek

Feb 20, 2025

The Beadle and Tatum experiments were based on all of the following assumptions except that . a. supplemented media permit growth

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.
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b. two strains of auxotrophic Neurospora that grow on minimal medium supplemented with biotin have mutations in the same geneExplanation: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.... Show More
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B) two strains of auxotrophic Neurospora that grow on minimal medium supplemented with biotin. have mutations in the same geneExplanation:The Beadle and Tatum experiment proved that genes are responsible for making enzymes that control metabolic processes. ... From there, they determined that the mold needed the amino acid arginine, and their mutation was to a single The concept above was proposed by George Beadle and Edward Tatum in an influential 1941 paper on genetic mutations in the mold Neurospora crassa, and subsequently was dubbed the "one gene–one enzyme hypothesis" by their collaborator Norman Horowitz .In 2004 Norman Horowitz reminisced that "theseexperiments founded the science of what Beadle and Tatum called 'biochemical genetics.' In actuality they proved to be the opening gun in what became molecular genetics and all the developments that have followed from that."The development of the one gene– one enzyme hypothesis is often considered the first significantresult in what came to be called molecular biology. Although it has been extremely influential, the hypothesis was recognized soon after its proposal to be an oversimplification. Even the subsequentreformulation of the "one gene–one polypeptide" hypothesis is now considered too simple to describe the relationship between genes and proteins.... Show More
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