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Introns

Introns

Non-coding, intervening sequences of dna that are transcribed, but are removed from within the primary gene transcript and rapidly degraded during maturation of messenger rna. most genes in the nuclei of eukaryotes contain introns, as do mitochondrial and chloroplast genes.


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Re: Why would a comparison of the genomic and cDNA sequences ide

genomic DNA..actually genes have exons+introns...cDNA you get from mRNA(thus it contains only exons).If you mix genomic and cDNA and heat them..they will denaturate..then you lower temperature and cDNA will hybridize with genomic DNA on matching ...

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by zami'87.
Sun Aug 23, 2009 5:18 am
 
Forum: Bioinformatics
Topic: Why would a comparison of the genomic and cDNA sequences ide
Replies: 1
Views: 692

Intron: Unusual donor-acceptor splice site (GT-AG)

As we know all introns obey the GT-AG rule (donor and acceptor splice site). I would like to know what actually happen if the GT-AG sites were intervened with unusual junction sequences (before GT/after AG), for eg: 1. gcgcgggc T ...

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by molecular09
Wed Jul 01, 2009 8:52 am
 
Forum: Molecular Biology
Topic: Intron: Unusual donor-acceptor splice site (GT-AG)
Replies: 0
Views: 224

Can you use mtDNA to...

... organisms. The best nuclear DNA to use for determining relationships between closely related indivduals is, again, the most variable regions. Introns, pseudogenes, MHC genes would be your best bets. May I ask what species you're working with? And what your goal is? Microsatellites might be ...

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by wbla3335
Tue Apr 28, 2009 12:45 pm
 
Forum: Genetics
Topic: Can you use mtDNA to...
Replies: 12
Views: 1479

Re: nucleotides

The coding strand of the DNA is made up of introns (non-coding parts) and exons (coding parts). when the mRNA is transcripted from the DNA it includes all the corresponding parts (both the introns and exons) but then the mRNA is spliced, which ...

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by menu
Wed Apr 15, 2009 6:06 am
 
Forum: Genetics
Topic: nucleotides
Replies: 1
Views: 423

Re: introns and exons

hi canalon, thanks for your hints. i think i know my answer now. ub2 is not a separate gene but the exon that wasn't included in the splicing process. it was annotated as a gene, but may not necessarily a gene. although there is no cDNA in the database encoding for the gene, the 123 amino acids are ...

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by kai85
Wed Apr 01, 2009 5:41 pm
 
Forum: Cell Biology
Topic: introns and exons
Replies: 9
Views: 1329
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