Tris-phosphate-EDTA solution is widely used in molecular biology for its ability to stabilize and protect nucleic acids. It is commonly employed as a buffer in DNA and RNA extraction and purification processes, ensuring the integrity of the genetic material by preventing degradation. The solution is also utilized in gel electrophoresis, where it helps maintain optimal pH and ion concentration for efficient separation of DNA fragments. Additionally, it serves as a storage buffer for DNA samples, as the EDTA component chelates metal ions that could otherwise catalyze enzymatic degradation. Its versatility and effectiveness make it a staple in laboratories working with nucleic acids.