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.
Smyrna, GA. Smyrna is located in northwest Georgia. Smyrna is between the Cobb, Fulton county. Smyrna has 15.35 square miles of land area and 0.03 square miles of water area. As of 2010-2014, the total Smyrna population is 52,922, which has grown 29.08% since 2000.