Comprehensive University Study Notes on Introductory Microbiology, Taxonomy, and Microbial Pathology

The Watson-Crick model of DNA structure proposes a double-helix formation, where two polynucleotide strands twist around each other. Each strand consists of a backbone made of sugar and phosphate groups, with nitrogenous bases attached. The bases pair specifically: adenine (A) with thymine (T), and guanine (G) with cytosine (C) through hydrogen bonds, ensuring the stability of the genetic molecule. This structure allows for the replication and storage of genetic information. Additionally, it promotes the ease of transcription into RNA during protein synthesis.