which is a point mutation and not a frameshift mutation

A point mutation is a change to a single nucleotide in the DNA sequence. This type of mutation may lead to an amino acid substitution if it occurs in a protein-coding region, though it may also have no observable effect. A frameshift mutation is a mutation caused by insertion or deletion of a nucleotide that changes the reading frame of the genetic sequence. These mutations lead to a complete alteration of the amino acid sequence and can cause serious health problems.

A point mutation is a mutation in which a single nucleotide base is changed, inserted, or deleted. This type of mutation may be insignificant, cause a missense mutation, or lead to a premature stop codon and the creation of a truncated and potentially non-functional protein. A frameshift mutation is a mutation that changes the frame of the gene, either by inserting or deleting a single nucleotide base. Unlike point mutations, frameshift mutations can lead to a drastically different protein product than that which was intended.