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Reversion

reversion

(Science: molecular biology) Reversion of a mutation occurs when a second mutation restores the function that was lost as a result of the first mutation. The second mutation causes a change in the dNA that either reverses the original alteration or compensates for it. A reappearance of an earlier characteristic.


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Re: Evolution or De-evolution?

... lost in genes. In the case you mention of plants bred to be resistant, their reversal to an older type in the absence of the threat is a simple reversion to a 'setting' which is quite recent. If we carried antibodies to every disease that has ever existed we wouldn't have room for our blood ...

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by animartco
Sat Sep 07, 2013 3:15 pm
 
Forum: Evolution
Topic: Evolution or De-evolution?
Replies: 52
Views: 42290

galactose metabolism

... from the medium....but my question is dis....how will i know the cells could grow because of the plasmid transformed and not due to spontaneous reversion or a second site mutation.....????

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by APmicro
Thu Oct 11, 2012 3:46 am
 
Forum: Cell Biology
Topic: galactose metabolism
Replies: 0
Views: 1029

Problem understanding result of lighting regime-phytochrome

... which is important, vice versa for long night plant. However, can someone explain this to me in terms of Phytochrome (Pr/Pfr)? Is it b/c dark reversion is so slow, and therefore interrupting a light period with darkness won't convert much Pfr to Pr? Whereas in a night period, the flash of ...

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by ADAS137
Sun Jan 15, 2012 9:42 am
 
Forum: Botany Discussion
Topic: Problem understanding result of lighting regime-phytochrome
Replies: 13
Views: 6003

2 Questions about Evolution and Genetics

... randomly and you will see them over time. Among that popoulation small group are going to emigrate with already a given set of mutations. Since reversion is not very common, what you will see is that as they move away they are going to start accumulating their own muattaions, but at the same ...

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by canalon
Fri Mar 18, 2011 3:46 am
 
Forum: Genetics
Topic: 2 Questions about Evolution and Genetics
Replies: 3
Views: 2000

Any SOLID arguments against evolution?

... prokaryotes haven't gotten rid of the harmful eukaryotes... -Why sex? No clue, but once it was there, and probably had some benefits, I guess that reversion was not an option. And natural selection still retain asexual reproduction for many organisms (insects, plant, bacteria,...) -Mutations are ...

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by canalon
Fri Feb 11, 2011 9:21 pm
 
Forum: Evolution
Topic: Any SOLID arguments against evolution?
Replies: 309
Views: 538928
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