Final answer:
The statement that the genetic code is unambiguous is true, indicating that each codon codes for a single amino acid. However, the genetic code is also redundant, which allows for multiple codons to encode the same amino acid.
Step-by-step explanation:
The statement that the genetic code is unambiguous is true. This means that each codon specifies only a single amino acid, making the code precise in its message for protein synthesis. However, it is important to note that the genetic code is also redundant, which means that while each codon corresponds to only one amino acid, multiple codons can code for the same amino acid. For example, the amino acid threonine is encoded by four different codons. This redundancy helps in reducing the consequences of possible mutations.