This document outlines the basic steps for extracting DNA, including cell lysis to release the DNA, separating it from other cellular components, precipitating it with alcohol, and determining its concentration and purity. It describes DNA as the genetic material located within chromosomes that is composed of nucleotides. The basic extraction steps involve lysing cells and the nucleus, removing debris, separating DNA, and suspending the purified DNA in buffer. Methods can involve physical, chemical, or enzymatic disruption of cells and nuclei. The choice of extraction method depends on required DNA quantity and purity as well as time and cost constraints.