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.
County Obstetrics & Gynecology, Inc. The choice for a woman's health care provider should be a decision that you are comfortable with through all stages of life. Our practice is dedicated to caring for the health care needs of women of all ages. County Ob/Gyn is committed to education and the advancement of knowledge.