When scientists were attempting to determine the structure of the genetic code, Crick and coworkers found that when three base additions or three base deletions occurred in a single gene, the wild-type phenotype was sometimes restored. These data supported the hypothesis that ________.
A) the code is triplet B) the code contains internal punctuation C) AUG is the initiating triplet D) the code is overlapping E) there are three amino acids per base