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Transposons

transposon

(Science: molecular biology) small, mobile dNA sequences that can replicate and insert copies at random sites within chromosomes. They have nearly identical sequences at each end, oppositely oriented (inverted) repeats and code for the enzyme, transposase, that catalyses their insertion.

bacteria have two types of transposon, simple transposons that have only the genes needed for insertion and complex transposons that contain genes in addition to those needed for insertion.

eukaryotes contain two classes of mobile genetic elements, the first are like bacterial transposons in that dNA sequences move directly. The second class (retrotransposons) move by producing rNA that is transcribed, by reverse transcriptase, into dNA which is then inserted at a new site.


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looking for a difficult gene

... and western blot with other species antibody. And the sriking point is that I always find related genes to the one I am looking for, and transposons, always of the same kind, but not my gene. Do you have any idea of what is happening, does someone has a similar experience? Thanks in advance! ...

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by iruka
Fri Dec 07, 2012 10:01 am
 
Forum: Genetics
Topic: looking for a difficult gene
Replies: 1
Views: 1063

Re: Theories - Origin of Life

... that occur) while most other mutations which for some reason not corrected, are deleterious to the organism. I haven't even begun to talk about transposons and their part in genome restructuring. All these processes are under the control and regulation of the cell as it responds to stress and ...

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by scottie
Thu Sep 20, 2012 4:13 pm
 
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 562
Views: 929068

Theories - Origin of Life

... environmental influences (including those that lead to almost all cancers) do not affect the next generation. I haven't even begun to talk about transposons and their part in genome restructuring. All these processes are under the control and regulation of the cell as it responds to stress and ...

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by AstraSequi
Tue Mar 27, 2012 2:25 am
 
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 562
Views: 929068

Re: Theories - Origin of Life

... that occur) while most other mutations which for some reason not corrected, are deleterious to the organism. I haven't even begun to talk about transposons and their part in genome restructuring. All these processes are under the control and regulation of the cell as it responds to stress and ...

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by scottie
Tue Mar 20, 2012 2:22 pm
 
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 562
Views: 929068

Re: Theories - Origin of Life

... that occur) while most other mutations which for some reason not corrected, are deleterious to the organism. I haven't even begun to talk about transposons and their part in genome restructuring. All these processes are under the control and regulation of the cell as it responds to stress and ...

See entire post
by scottie
Sat Mar 03, 2012 5:23 pm
 
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 562
Views: 929068
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