Beadle Discovered That Metabolic Pathways Are Studied Most Effectively Using

Multiple Choice

Beadle discovered that metabolic pathways are studied most effectively using which of the following techniques?

A) creating multiple gene mutations resulting in nonfunctional enzymes specific to a metabolic pathway
B) adding additional intermediates of the metabolic pathway
C) removing all intermediates of the metabolic pathway
D) creating single gene mutations resulting in nonfunctional enzymes specific to a metabolic pathway