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
1 day 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 …
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 …
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 …
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 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 …
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 …
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 …
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 …
Unraveling Plasmids: A Comprehensive Guide - CD Genomics
What is a Plasmid? Definition of Plasmids: Plasmids are small, circular DNA molecules. They exist separately from the main DNA in cells and can copy themselves. They are predominantly …