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.
For Queens County, the Department of Parks and Recreation is headquartered at The Overlook in Forest Park located in Kew Gardens. 1  Flushing MeadowsâCorona Park, a 1,255-acre (5.08 km2) park, is considered a flagship park in Queens. 2  Kissena Park is a 234-acre (0.95 km2) park with a lake as a centerpiece.