Codons, with same first two bases but different third base, can code for the same amino acid. For those codons, third-base mutations {silent mutation} do not make any difference to survival.
However, different codons bind to different t-RNAs, and some t-RNAs are more abundant than others. Times to bind scarcer t-RNA are longer than times for more abundant t-RNA. Time differences can affect protein folding, change protein structure, and affect function.
Silent mutations can accumulate and eventually encode new proteins. For example, mutations can cause body-part replication. Subsequent generations can modify replicated parts to make new structures and functions.
Biological Sciences>Genetics>Mutation
Outline of Knowledge Database Home Page
Description of Outline of Knowledge Database
Date Modified: 2022.0224