extrachromosomal element
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element — 1. A substance composed of atoms of only one kind, i.e., of identical atomic (proton) number, that therefore cannot be decomposed into two or more elements and that can lose its chemical properties only by union with some other e. or by a nuclear … Medical dictionary
transposable element — n a segment of genetic material that is capable of changing its location in the genome or that in some bacteria is capable of undergoing transfer between an extrachromosomal plasmid and a chromosome called also transposable genetic element * * *… … Medical dictionary
transposable element — noun : a segment of genetic material that is capable of changing its location in the genome or in some bacteria is capable of undergoing transfer between an extrachromosomal plasmid and a chromosome * * * transposable element noun (genetics) A… … Useful english dictionary
transposable element — noun Date: 1979 a segment of genetic material that is capable of changing its location in the genome or in some bacteria of undergoing transfer between an extrachromosomal plasmid and a chromosome … New Collegiate Dictionary
Plasmid — A self replicating (autonomous) circle of DNA distinct from the chromosomal genome of bacteria. A plasmid contains genes normally not essential for cell growth or survival. Some plasmids can integrate into the host genome, be artificially… … Medical dictionary
episome — An extrachromosomal element (plasmid) that may either integrate into the bacterial chromosome of the host or replicate and function stably when physically separated from the chromosome. [epi + G. soma, body ( … Medical dictionary
Recombination — The trading of fragments of genetic material between chromosomes before the egg and sperm cells are created. Key features of recombination include the point to point association of paired chromosomes (synapsis) followed by the visible exchange of … Medical dictionary
episome — A genetic extrachromosomal element (e.g. the F factor in Escherichia coli) which replicates within a cell independently of the chromosome and is able to integrate into the host chromosome. The step of integration may be governed by a variety of… … Glossary of Biotechnology
lysogeny — A condition in which a bacteriophage genome (pro phage) survives within a host bacterium, either as part of the host chromosome or as part of an extrachromosomal element, and does not initiate lysis … Glossary of Biotechnology
Transposon — Transposons are sequences of DNA that can move around to different positions within the genome of a single cell, a process called transposition. In the process, they can cause mutations and change the amount of DNA in the genome. Transposons were … Wikipedia
