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Insertions

Insertion sequence

mobile nucleotide sequences that occur naturally in the genomes of bacterial populations. When inserted into bacterial dna, they inactivate the gene concerned, when they are removed the gene regains its activity. Closely related to transposons and range in size from a few hundred to a few thousand bases, but are usually less than 1500 bases.


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Re: The Colin Leslie Dean species paradox

... why they are in a seperate domain from protists, fungi, plants and animals. They ingest plasmids and are infected by viruses. Thus they have insertions, deletions and replacement of their DNA. Some of them revert back and are called revertants. SO because they change in their genetic material ...

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by AFJ
Sat Jul 18, 2009 6:07 pm
 
Forum: Evolution
Topic: The Colin Leslie Dean species paradox
Replies: 120
Views: 2185

Re: When do mutations occur?

... smarter than ourselves. I am not a biogist and I never said I was one. DId I? I know and understand the basics of mutations (point mutations, insertions, frammeshifts etc); I meant to ask a more specific question. I wanted to know about the problems that can happen during transcription and ...

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by o4aclaireism
Wed Nov 05, 2008 11:18 pm
 
Forum: Molecular Biology
Topic: When do mutations occur?
Replies: 17
Views: 2744

Gene activation?

... cell division. Things that can cause proto-oncogenes to become oncogenes include (but are not limited to): -Point mutations (see c-kit) -Insertions of foreign genetic elements in coding/regulatory sequences of proto-oncogenes -Deletions -Looking at them the wrong way...well ok maybe not ...

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by BioLad
Thu Feb 14, 2008 5:30 pm
 
Forum: Genetics
Topic: Gene activation?
Replies: 2
Views: 686

Re: Differentiation Of Bacillus subtilis strains.

The first is a standard lab strain of B subtilis completely competent for sporulation (spo+). The other two have transposon insertions inactivating, in each case, a different gene involved in sporulation: spoVM or gerD. The gerD interruption has been modified to confer neomycin resistance. ...

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by blcr11
Sun Dec 30, 2007 2:03 pm
 
Forum: Microbiology
Topic: Differentiation Of Bacillus subtilis strains.
Replies: 4
Views: 1325

DNA change?

besides considering the adavancement of the technology now, you would not really run the risks associated with random DNA insertions (like cancer) just to change hair color ;-) But in the future, when the technique will improve, I am pretty sure that cosmetic cahnges are going to be ...

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by canalon
Wed Dec 19, 2007 8:40 pm
 
Forum: Genetics
Topic: DNA change?
Replies: 5
Views: 1187
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