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Spacer dna

spacer DNA

(Science: molecular biology) The dNA sequence between genes. In bacteria, only a few nucleotides long. In eukaryotes, can be extensive and include repetitive DNA, comprising the majority of the dNA of the genome. The term is used particularly for the spacer DNA between the many tandemly repeated copies of the ribosomal RNA genes.


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polycistronic = multigenic

Does polycistronic means multigenic? What I understood was polycistronic means that a mRNA molecule code for multiple proteins with spacer and overlapping genes while multigenic just means that a mRNA codes for multiple proteins (no overlapping between genes)? but then i see that many reference ...

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by simpleton
Thu May 06, 2010 7:59 am
 
Forum: Genetics
Topic: polycistronic = multigenic
Replies: 5
Views: 3982

ITS-PCR

Internally Transcribed Spacer PCR: Basically you amplify spacer region of the bacterial rRNA. An informed guess ... From http://biowww.net/detail-1294.html: RAPD is random amplified polymorphic DNA The method is based on the Polymerase Chain Reaction (PCR) using short (usually 10 ...

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by canalon
Thu Sep 06, 2007 2:14 pm
 
Forum: Molecular Biology
Topic: ITS-PCR
Replies: 2
Views: 4822

Bacterial Genome

... The mycobacterium have a very dense genome, and most of it is used either as coding or regulating sequences. Other bacteria have pseudo genes, spacer sequences and other non coding regions. How much exactly I don't know but this might be found in the princeps papers for each sequencing project, ...

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by canalon
Wed Feb 07, 2007 9:57 pm
 
Forum: Microbiology
Topic: Bacterial Genome
Replies: 3
Views: 2474

The Fiber Disease

... were investigated by PCR-fingerprinting and analysis of ribosomal DNA internal transcribed spacer (ITS) sequences and compared with the corresponding data sets established for described ...

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by RANDY
Fri Jun 02, 2006 12:59 am
 
Forum: Human Biology
Topic: The Fiber Disease
Replies: 7403
Views: 5562699

Which came first the DNA, RNA or protein

... our ancestor, wiped out the neanderthal. Why? who knows... Junk DNA is definitely a misnomer, we don't know why it's here, but it may not ... only a part of its role. Other roles have also been suggested such as spacer between genes allowing a regulation of expression. As for the danger ...

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by canalon
Fri Mar 03, 2006 4:17 am
 
Forum: Molecular Biology
Topic: Which came first the DNA, RNA or protein
Replies: 64
Views: 53959
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