Fig. 4: The Four Nitrogenous Bases in DNA: Adenine, Guanine, Cytosine, and Thymine

Adenine and guanine are also known as purine bases; cytosine and thymine are also called pyrimidine bases. Each deoxyribonucleotide will contain one of these four bases.


Illustration of The Four Nitrogenous Bases in DNA: Adenine, Guanine, Cytosine, and Thymine .jpg by Gary E. Kaiser, Ph.D.
Professor of Microbiology, The Community College of Baltimore County, Catonsville Campus
This work is licensed under a Creative Commons Attribution 4.0 International License.
Based on a work at https://cwoer.ccbcmd.edu/science/microbiology/index_gos.html.

Creative Commons License

Last updated: Feb., 2021
Please send comments and inquiries to Dr. Gary Kaiser