Single-stranded DNA

Single-stranded DNA (ssDNA) is a type of DNA molecule composed of a single chain of nucleotides, unlike the typical double helix structure. It occurs naturally during processes such as DNA replication and transcription or in certain viruses. The single strand allows it to be more flexible and accessible for various biological functions. While double-stranded DNA stores genetic information in a stable, paired form, ssDNA plays a crucial role in copying and expressing genes, as well as in medical and scientific techniques like DNA sequencing and testing.