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.
New Smyrna Beach is a beautiful city that is nestled among the moss-draped trees along the shores of the picturesque Indian River in Volusia County. Its located on the central east coast of Florida, completely surrounded by bodies of water; the Atlantic Ocean to the east, the Intracoastal Waterway to the west and Mosquito Lagoon in between the two.