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Negative pressure

negative pressure

pressure less than that of the ambient atmosphere.

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Hypothetical experiment

... to create conditions mimicking nature - changing environment where negative or positive pressure is present and mounting. I am afraid that using minimal media predisposes bacteria ...

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by Cat
Fri Dec 09, 2011 3:53 pm
Forum: Evolution
Topic: Hypothetical experiment
Replies: 6
Views: 4606

The Implausible Engines of Evolution

... to miss one important concept here: what makes a mutation positive or negative in the first place? Most mutations are quite useless in their current ... in numbers and the mutant strain loses ground. If the antimicrobial pressure was constant (for example, a life-long antimicrobial treatment of ...

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by biohazard
Mon Oct 10, 2011 7:23 am
Forum: Evolution
Topic: The Implausible Engines of Evolution
Replies: 40
Views: 67249

Theories - Origin of Life

... different cases is a demand, "social order", "selection pressure" and so on. If this law of nature to apply the theory to our ... society" creative intelligence is no longer needed, subject to negative selection pressure and begins to regress. 30-50 thousand years happy ...

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by LeoPol
Mon Sep 05, 2011 8:29 am
Forum: Evolution
Topic: Theories - Origin of Life
Replies: 562
Views: 929114

Population Genetics Lab (Palladino)

... moth genotype have an equal chance of survival or is there a selective pressure (positive or negative) on one or more genotype? Explain pls. Thank you!!!!

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by overthehead
Sun Jul 17, 2011 8:39 pm
Forum: Genetics
Topic: Population Genetics Lab (Palladino)
Replies: 0
Views: 1914

Recombination in RNA viruses,Ruzic,Kovac

... and in hantaviruses (Sibold et al., 1999) have added doublestranded and negative-sense RNA viruses, respectively, to the long list of RNA viruses ... any particular virus will be mediated by such factors as the selective pressure for novel variation, the importance of interactions between different ...

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by anakovacevic
Sat Jun 12, 2010 8:28 pm
Forum: Cell Biology
Topic: Recombination in RNA viruses,Ruzic,Kovac
Replies: 2
Views: 36053
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