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.
Soldotna is a city in the Kenai Peninsula Borough, in the U.S. State of Alaska. At the 2010 census the population was 4,163. It is the seat of the Kenai Peninsula Borough. Soldotna is located in the Southcentral portion of Alaska on the central-western portion of the Kenai Peninsula. The city limits span 7 square miles along the Kenai River, which empties into the Cook Inlet in the nearby city of Kenai.