How are mutations in the DNA called that do not change the s

How are mutations in the DNA called that do not change the sequence of the encoded proteins? Explain this phenomenon based on the properties of the genetic code.

Solution

2). A permanent change in the sequence of nucleotides of the genome is called mutation, which results in altered or absence of corresponding protein synthesis. The change in single nucleotide results in point mutation, which is of different types such as silent mutations, missense mutations, nonsense mutations, and frame-shift mutations.

As the genetic code is redundant, a single amino acid may have more than one codon. For example, the amino acid glutamic acid can be coded by two different codons such as GAA and GAG.

As both the triplets code for the same amino acid, no functional change in the protein synthesis occurs. These type of mutations are called as silent mutations (a type of point mutation), and it commonly occurs in several cells, but the phenotypic characters are not expressed out.