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... that I would like to ask: if you do the experiment as you are saying, wouldn't the atmospheric oxygen simply permeate the agar to the bottom layers? Further, the organisms at the top would produce reactive oxygen species that could affect the anaerobes, so they would still not survive greatly. ...

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by sosippus
Wed Sep 24, 2014 7:44 pm
Forum: Microbiology
Topic: Oxygen requirements of eukaryotes
Replies: 3
Views: 339

Re: Vitamin D absorption for different skin types

... to be an area that is just beginning to draw research interest. Darker skin evolved in high light-exposure populations to protect deeper skin layers from UV damage, but tones lightened in pops with lower exposure, to allow enough UV to reach the D-generating skin tissues. Dark-skinned people ...

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by Darby
Tue Jul 15, 2014 7:39 pm
Forum: Human Biology
Topic: Vitamin D absorption for different skin types
Replies: 1
Views: 749

Meiosis prophase I crossover

... homologous chromosomes that results in recombinant chromosomes.” http://en.wikipedia.org/wiki/Chromosomal_crossover Question: Due to the multiple layers of winding, how can parts of the chromosome break evenly? Is it possible that the winding mechanism provides chiasma (break) points in advance? ...

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by gs99
Fri Mar 07, 2014 9:23 pm
Forum: Molecular Biology
Topic: Meiosis prophase I crossover
Replies: 0
Views: 2626

Re: Irrefutable Facts Against Evolution

... Fact Check: Did Bill Nye Tell A Huge Lie About The Fossil Layers? http://thetruthwins.com/archives/fact-check-did-bill-nye-tell-a-huge-lie-about-the-fossil-layers Does A Belief In Evolution Lead To Racism? ...

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by Meranda
Sat Feb 22, 2014 10:43 pm
Forum: Evolution
Topic: Irrefutable Facts Against Evolution
Replies: 52
Views: 59249

Re: 7 deadly sins in nature

... make out quite what the transgression was. Their rules of conduct are difficult to make out because we do not understand their languages or social layers. For instance an animal can half kill a subordinate and not be ostracised but if it even argues with a superior it can be thrown out. Finding ...

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by animartco
Wed Jan 15, 2014 1:11 pm
Forum: Zoology Discussion
Topic: 7 deadly sins in nature
Replies: 6
Views: 3756
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