Skip to Main Content
University of Phoenix logo
University Library

BIO/410: Genetics

Molecular Structure of DNA, RNA, and Chromosomes

girl standing
Topics covered in this video include: Development of the DNA Structural Model, The Central Dogma, Gene Regulation, DNA Mutations, and DNA Technologies.
boy sitting in a chair
The biochemist Erwin Chargaff developed a method to study the chemical composition of DNA. Nitrogen bases are the main components: Adenine, Thymine, Guanine, and Cytosine. Rosalind Franklin took x-ray diffraction photos of DNA and from these, Watson and Crick derived the structure.
nucleic acids
Nucleic acids consist of nucleotide chains; nucleotides are composed of a phosphate, a sugar, and a nitrogen-containing base. By the 1920s scientists recognized two different nucleic acid chains, ribonucleic acid (RNA) and deoxyribonucleic acid (DNA).

Ask Us!

Need help finding additional information on this week’s topic? Ask us!

We’ll work with you to identify specific resources and search techniques to keep you moving forward.