Glossary of Karst and Cave Terms
Based on "A Lexicon of Cave and Karst Terminology with Special to Environmental Karst Hydrology" EPA/600/R-02/003, 2002, EPA: Washington, DC., Speleogenesis Glossary includes 2699 cave & karst terms
A sudden change in the genetic material of an organism's germ cells, resulting in offspring that possess characteristics markedly different from those of either parent. Mutations generally are harmful, but occasionally may improve an organism's chances for survival . See also adaptation; evolution.