Answer:
are almost universal among all living things
Step-by-step explanation:
Codons are triplet nucleotide sequences that are derived from RNA as opposed to DNA. These sequences code for specific amino acids in addition to start and stop codons.
The genetic code is read as a nonoverlapping sequence of codons. The genetic code is almost universal in that the same codons are assigned to the same amino acids in most living things. It is only nearly universal because there are some exceptions where a few of the codons differ from the standard ones. For instance, it has been seen that one or two of the stop codons have been assigned to amino acids instead.
The fact that the genetic code is the same in nearly all living organisms is evidence that they all share a common ancestor. That is, it is evidence for biological evolution.