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 …
Plasmid - National Human Genome Research Institute
2 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 …
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 …
Plasmid | DNA replication, genetic engineering, cloning | Britannica
Oct 14, 2025 · Plasmid, in microbiology, an extrachromosomal genetic element that occurs in many bacterial strains. Plasmids are circular deoxyribonucleic acid (DNA) molecules that …
Plasmid - Definition, Types and Functions | Biology Dictionary
Nov 15, 2016 · A plasmid is a small, circular piece of DNA that is different than the chromosomal DNA, which is all the genetic material found in an organism’s chromosomes. It replicates …
Plasmids- Definition, Properties, Structure, Types, Functions, …
Mar 13, 2022 · The term Plasmid was coined by Joshua Lederberg in 1952. Plasmids are important as genetic tools, which are used to introduce, manipulate or delete certain genes …
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 …
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 …
A Brief History of Plasmids - PMC
In the late 1950s, a number of laboratories took up the study of plasmids once the discovery was made that extrachromosomal antibiotic resistance (R) factors are the responsible agents for …
Crash Course: Plasmid DNA Fundamentals | ZYMO RESEARCH
Plasmid DNA has proven to be an indispensable biological tool. Learn about what plasmid DNA is, common features of plasmid DNA, how to work with plasmid DNA in the lab, and more.