Question

Beadle and Tatum gave 'one gene and one enzyme' hypothesis while working on

• A. Salmonella typhimurium
• B. Neurospora crassa
• C. Eschericlia coli
• D. Diplococcus pneumoniae

Answer 1

Answer: (B)

Neurospora crassa

Beadle and Tatum gave 'one gene and one enzyme' hypothesis while working on Neurospora crassa. This hypothesis is the idea that genes act through the production of enzymes with each gene responsible for producing a single enzyme that in turn affects a single step in a metabolic pathway. The concept was proposed by George Beadle and Edward Tatum in the mold, Neurospora crassa, and subsequently was dubbed the "one gene-one enzyme hypothesis" by their collaborator Norman Horowitz.

Thus, the correct answer is option B.