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Ion exchange

Ion exchange

reversible chemical reaction between a solid, often an ion exchange resin, and a fluid whereby ions may be exchanged from one substance to another. This technique is used in water purification, in research, and in industry.


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Re: Natural selection is proven wrong

... depends on its genetic learning rate (how fast it gains or changes new information/genes). Sexual reproduction has a good amount of crossover exchange which greatly accelerates the ability to adapt and change. Asexual reproducers such as E. coli produce clones of itself which are identical ...

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by GaryGaulin
Tue Sep 01, 2009 3:00 am
 
Forum: Evolution
Topic: Natural selection is proven wrong
Replies: 177
Views: 16290

Paramutation

... already see this: http://news.bbc.co.uk/2/hi/science/nature/5011826.stm Yes, everything in a biological organism is sensitive to change. Even one exchange of nucleotide in the DNA can cause the organism to be in a disease state/not optimal. The flip side is also possible, where one change could ...

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by kolean
Fri Aug 28, 2009 12:04 pm
 
Forum: Molecular Biology
Topic: Paramutation
Replies: 5
Views: 105

Re:

... speciate depends on its learning rate (how fast it gains or changes new information/genes). Sexual reproduction has a good amount of crossover exchange which greatly accelerates the ability to adapt and change. Asexual reproducers such as E. coli produce clones of itself which are identical ...

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by GaryGaulin
Thu Aug 27, 2009 9:13 am
 
Forum: Evolution
Topic: Natural selection is proven wrong
Replies: 177
Views: 16290

meiosis in the production of gametes ...

meiosis actually produces the gametes, themselves, and is essential for reproduction. Crossing is the exchange of genetic material between homologous chromosomes, and allows for genetic diversity.

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by rtblue
Wed Aug 26, 2009 2:22 am
 
Forum: Cell Biology
Topic: meiosis in the production of gametes ...
Replies: 2
Views: 63

Endosymbiosis = Hybridization Speciation?

... online edition of the journal Nature. Endosymbiosis refers to a cell living within another cell. If the cells live together long enough, they will exchange genes; they merge but often keep their own cell membranes and sometimes their own genomes. http://www.sciencedaily.com/releases/2009/08/090819135436.htm ...

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by GaryGaulin
Mon Aug 24, 2009 1:21 am
 
Forum: Evolution
Topic: Endosymbiosis = Hybridization Speciation?
Replies: 0
Views: 50
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