Mutations+Continued


 * Point Mutations: ** There are three different types of point mutations: substitution, insertion, and deletion.

** A __substitution__ mutation occurs when one nucleotide is substituted for another. This type of mutation, as seen to the left, changes one codon, which changes one of the amino acids in the sequence for making a protein. **** An __insertion__ mutation occurs when one nucleotide is inserted into the DNA sequence. As seen below, this type of mutation changes the entire codon sequence and affects every amino acid that follows insertion. A __d__ **** __eletion__ mutation occurs when one nucleotide is deleted from the DNA sequence. This type of mutation changes the entire codon sequence and affects every **** amino acid that follows the deletion. ** ** Insertion and deletion mutations are usually referred to as frameshift **** mutations because they shift the codon frame. Therefore, insertion and deletion mutations are more severe because it changes the entire codon sequence. This can completely destroy the protein that the gene codes for. To learn more about the different types of point mutations, visit the animation link below. **


 * Point Mutations Animation: ** []


 * Additional Learning: **
 * ** Frameshift Mutations: ** []
 * ** Extra Information: ** []
 * ** Tutorial: ** []