DNA and RNA Bases. In DNA, there are four different bases: adenine (A) and guanine (G) are the larger purines. Cytosine (C) and thymine (T) are the smaller pyrimidines.
Gretna is the second-largest city and parish seat of Jefferson Parish, Louisiana, United States. Gretna is on the west bank of the Mississippi River, just east and across the river from uptown New Orleans. It is part of the New Orleans â Metairie â Kenner Metropolitan Statistical Area. The population was 17,736 at the 2010 census.
Gillette, Wyoming. Gillette is a city in and the county seat of Campbell County, Wyoming, United States. The population was estimated at 31,797 as of 1 July 2013. Gillette is centrally located in an area involved with the development of vast quantities of American coal, oil, and coalbed methane gas.