By Carolyn L. Driedger and William E. Scott, USGS -- Republished from USGS fact sheet 2008-3062. 1  Mount Rainier: The flat floor of the Puyallup River valley near Orting, Washington, is formed by deposits of the 500-year-old Electron lahar, which surged down from Mount Rainier (in background).
Substitution mutation. Definition. A type of point mutation in which a single nucleotide is substituted with (or exchanged for) a different nucleotide that may result in an altered sequence of amino acid during translation, which may render the newly synthesized protein ineffective.Supplement.n transversion, purine is substituted with pyrimidine or a pyrimidine with a purine. See also: point mutation. Please contribute to this project, if you have more information about this term feel free to edit this page. This page was last modified on 16 October 2008, at 00:53.This page has been accessed 109,894 times.
Base substitution is a type of mutation that is least likely to  affect the function of the protein corresponding to the gene in  which the mutation occurs. Proteins are nit â¦ rogenous organic  compounds. change in a single nitrogenous base can change the entire structure of a protein because a change in a single amin â¦ o acid can affect the shape of the protein. A frameshift mutation is a mutation in which a single base is added or deleted from DNA.