Spectrum of different types of human gene mutations logged in Human Gene Mutation Database as of September 13, 1998 (http://www.hgmd.org). Source: The Nature and Mechanisms of Human Gene Mutation, The Online Metabolic and Molecular Bases of Inherited Disease Citation: Valle D, Beaudet AL, Vogelstein B, Kinzler KW, Antonarakis SE, Ballabio A, Gibson K, Mitchell G. The Online Metabolic and Molecular Bases of Inherited Disease; 2014 Available at: http://ommbid.mhmedical.com/DownloadImage.aspx?image=/data/books/971/ch13fg1.png&sec=62640689&BookID=971&ChapterSecID=62640656&imagename= Accessed: October 08, 2017 Copyright © 2017 McGraw-Hill Education. All rights reserved