Work Step by Step
Option a. is incorrect. A single codon cannot specify for more than one amino acid. Option b. is incorrect. Every codon does not specify a different amino acid. Many times, several codons can specify a single amino acid. Option d. is incorrect. All codons have a function. Either they specify an amino acid or they stand for the start or stop codon. Option c. is correct. Several codons can specify a single amino acid. For example, UUA, UUG, CUU, CUC, CUA, and CUG all code for the amino acid leucine.