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.
A missense mutation is when the change of a single base pair causes the substitution of a different amino acid in the resulting protein.This amino acid substitution may have no effect, or it may render the protein nonfunctional. single base pair substitution that results in the translation of a different amino acid at that position. Definition from: GeneReviews from the University of Washington and the National Center for Biotechnology Information.