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Transposition

Biology TransposaseTransposon

Transposition
The movement of a discrete segment of DNA from one location in the genome to another.

 


Transposition. The movement of a DNA segment within the genome of an organism.
Transposon (transposable, or movable genetic element). A relatively small DNA segment that has the ability to move from one chromosomal position to another.

[edit] Transpositional recombination
Another form of site-specific recombination, transpositional recombination does not require an identical strand of DNA in the mobile element to match with the target DNA.

Transposition
Moving a DNA segment from one position of the genome to another or to a different genome. This change in genome structure happens in many organisms from bacteria to higher plants and animals.

Transposition in these cases occurs by a "copy (command/control-C) and paste (command/control-V)" mechanism. This requires an additional enzyme — a resolvase — that is also encoded in the transposon itself.

Another is transposition. This is when a stretch of DNA simply excises itself from one part of genome and moves itself to another. Transposons are pieces of DNA that do this.

Free transposons are not found; they spread via transposition into mobile DNA molecules such as plasmids.

In music, a transformation is any operation or process that may be applied to a musical variable, usually a set or tone row in twelve tone music, such as transposition, inversion, multiplication, retrograde, or rotation and combinations thereof.

DNA elements carrying genes for transposition and other genetic functions. The former genes enable those elements to move from one site on a chromosome to another. In many cases the latter genes enable bacteria to live in extreme environments.

They mostly come in as chunks of DNA by so-called "transposition" or in some cases "retro transposition" from autosomes. These events have brought to the Y chromosome new genes that appear to be critical for spermagenesis.

His research interests have included the study of the transposition of genetic elements, the biological significance of DNA transposition in living cells, and the study of DNA-protein interactions.

dextrocardia with mirror transposition of the cardiac chambers but without displacement of the abdominal viscera.
Synonym: type 2 dextrocardia.

A mobile piece of DNA that is flanked by terminal repeat sequences and typically bears genes coding for transposition functions. See transposable genetic element.

The simplest kind of a transposon, consisting of inserted repeats of DNA flanking a gene for transposase, the enzyme that catalyzes transposition.
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Autonomous transposons encode a transposase and are capable of transposing on their own. Transposition of non-autonomous elements requires trans-activation from the autonomous element.

Less frequently the aorta, after arching over the root of the right lung, is directed to its usual position on the left side of the vertebral column; this peculiarity is not accompanied by transposition of the viscera.

See also: Trans, Sequence, DNA, Protein, Chromosome