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Dna rearrangement

Dna rearrangement

(Science: molecular biology) Wholesale movement of sequences from one position to another in dna, such as occur somatically, for example in the generation of antibody diversity.


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Re: Theories - Origin of Life

... Major evolutionary change to the genome occurs by the amplification and rearrangement of pre-existing modules. Old genomic systems are disassembled ... � Major alterations in the content and distribution of repetitive DNA elements results in a reformatting of the genome to function in novel ...

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by scottie
Mon May 23, 2011 8:28 pm
 
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 266
Views: 28783

Re: Gene Rearrangement and Evolution

The overall DNA content does not change, although with "jumping genes" (Transposons) mutations can occur and change the DNA. Whether or not changing the sequence of genes in DNA is classed as changing the DNA would depend ...

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by Jesse2504
Sat Jul 04, 2009 8:42 am
 
Forum: Genetics
Topic: Gene Rearrangement and Evolution
Replies: 1
Views: 1320

Gene Rearrangement and Evolution

Clear this up for me: To say genes rearrange in a cell is to say a person's DNA changes. True or false? Also, can someone give me some info on "jumping genes"? I've been trying to decide if they really are a factor in evolution. I want to make sure I ...

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by mschristine
Thu Jul 02, 2009 6:18 pm
 
Forum: Genetics
Topic: Gene Rearrangement and Evolution
Replies: 1
Views: 1320

Mutation

... :? Ras oncogen is involved in various human and animal cancers. Some DNAs have been isolized from a number of normal tissues and cancerous tissues. ... 1). Point mutation on the gene ..................... 2). Chromosomal rearrangement that involved the gene .................... 3). Gene amplification ...

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by whizzbee
Sun Mar 01, 2009 3:42 pm
 
Forum: Molecular Biology
Topic: Mutation
Replies: 0
Views: 1983

Re: When do mutations occur?

... during translation. Think about UV radiation which can cause lesions in DNA which block the RNA polymerase thus, no transcription which means absence ... the mutation occur when the UV photon hits the bases and causes a rearrangement of covalent bonds (e.g. thimine dimerization)? The effect on ...

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by jonmoulton
Wed Nov 05, 2008 5:43 pm
 
Forum: Molecular Biology
Topic: When do mutations occur?
Replies: 19
Views: 11310
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