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 - Wikipedia
A plasmid is a small, extrachromosomal DNA molecule within a cell that is physically separated from chromosomal DNA and can replicate independently.
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 …
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 | 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 …
What is Plasmid DNA? Definition & Structure Explained – QIAGEN
A plasmid is a closed circular molecule of double-stranded DNA that range in size from 1 to >200 kb. Plasmids are found in various bacterial species, where they behave as additional genetic …
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 …
PLASMIDS - Microbiology Class
Feb 17, 2025 · Plasmids are extrachromosomal DNA molecules found in both eukaryotic and prokaryotic microorganisms that have the ability to replicate independently. In prokaryotes, …
Plasmid: Definition, Types, Function And Significance
Jun 2, 2024 · Plasmids are small, circular pieces of DNA that are found in both prokaryotic and eukaryotic cells. These pieces of DNA are important because they can confer special abilities …
PLASMID Definition & Meaning - Merriam-Webster
The meaning of PLASMID is an extrachromosomal ring of DNA especially of bacteria that replicates autonomously.