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  1. Plasmid - Wikipedia

    Plasmid Diagram of a bacterium showing chromosomal DNA and plasmids (Not to scale) A plasmid is a small, extrachromosomal DNA molecule within a cell that is physically separated from chromosomal …

  2. Plasmid - National Human Genome Research Institute

    3 days ago · A plasmid is a small circular DNA molecule found in bacteria and some other microscopic organisms. Plasmids are physically separate from chromosomal DNA and replicate independently.

  3. Plasmid | DNA replication, genetic engineering, cloning | Britannica

    Plasmid, in microbiology, an extrachromosomal genetic element that occurs in many bacterial strains. Plasmids are circular deoxyribonucleic acid (DNA) molecules that replicate independently of the …

  4. What Is a Plasmid in Biology and How Does It Work?

    Oct 4, 2025 · Once a gene is incorporated, the recombinant plasmid can be introduced into host cells, typically bacteria, for replication. This process allows for the production of numerous gene copies or …

  5. Plasmids 101: What is a plasmid? - Addgene

    Jan 14, 2014 · What is a plasmid? At their most basic level, plasmids are small circular pieces of DNA that replicate independently from the host's chromosomal DNA. They are mainly found in bacteria, …

  6. What is a plasmid? | IDT - Integrated DNA Technologies

    Dec 4, 2023 · A plasmid is a small circular piece of double stranded DNA that can replicate independently from a host’s chromosomal DNA. A plasmid is distinct from a cell’s chromosomal DNA …

  7. plasmid / plasmids | Learn Science at Scitable - Nature

    A plasmid is a small, circular, double-stranded DNA molecule that is distinct from a cell's chromosomal DNA. Plasmids naturally exist in bacterial cells, and they also occur in some eukaryotes.

  8. What Is a Plasmid in Biology? Its Function and Uses

    Aug 23, 2025 · A plasmid is a small, circular, extra-chromosomal DNA molecule found within the cells of many microorganisms. Unlike the main chromosomal DNA, which carries the fundamental genetic …

  9. What is a Plasmid? | Ask A Biologist

    Apr 12, 2010 · A plasmid is an independent, circular, self-replicating DNA molecule that carries only a few genes. The number of plasmids in a cell generally remains constant from generation to generation.

  10. Plasmids: Properties, Types, and Functions • Microbe Online

    Artificial plasmid or recombinant plasmid is the plasmid formed by recombining the bacterium’s DNA with desired DNA fragments. The process of transformation helps in introducing the DNA fragments to the …