Use the figure to answer the question.

The figure shows a simple metabolic pathway. According to Beadle and Tatum's hypothesis, how many genes are necessary for this pathway?
A) 1
B) 2
C) 3
D) It cannot be determined from the pathway.

Question

Use the figure to answer the question.

The figure shows a simple metabolic pathway. According to Beadle and Tatum's hypothesis, how many genes are necessary for this pathway?
A) 1 
B) 2 
C) 3 
D) It cannot be determined from the pathway.

Quizplus · Accepted Answer

Beadle and Tatum's hypothesis states that one gene codes for one enzyme. Since this pathway involves three distinct enzymes, it requires at least two genes.

Use the Figure to Answer the Question