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The previous answer from @Ark Lomas is true to the extent that gap-loving refers to preference of an open habitat. It was found that these species e.g. have improved flight abilities and are in general geographically more wide-spread. Here is prove: Ecology of Tropical Butterflies in Rainforest Gaps J. K. Hill, K. C. Hamer, J. Tangah and M. Dawood Oecologia ...


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Diarrhoea Diarrhea is loosely defined as passage of abnormally liquid or unformed stools at an increased frequency. For adults on a typical Western diet, stool weight >200 g/d can generally be considered diarrheal. Diarrhea may be further defined as acute if <2 weeks, persistent if 2–4 weeks, and chronic if >4 weeks in duration. ~Harrison's ...


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No. I don’t think anybody would call the sigma factor of bacterial RNA polymerase — or indeed any other protein — a cofactor or a coenzyme, the subset of cofactors that are organic (the original poster is wrong in his declaration about cofactors, or at least one reputable text book disagrees with him). I could justify this statement by quoting a definition ...


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Tetanic contractions and tremor are different phenomena. Tetanic contraction (or tetanus) refers to sustained contraction of a muscle subjected to high-frequency stimulation. With this high frequency, a new contraction begins before the previous one has ended. Thus the contractions get 'summed up'. You could see this interesting video for a demonstration. ...


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In order to quantify a target using real-time PCR, each run must include a standard curve of your target DNA. This is typically done by making serial dilutions of some known quantity of template DNA, with each dilution assayed in duplicate or triplicate on the same plate as your experimental samples of unknown quantity. A standard-curve is also important for ...


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This has come up again recently, so let me summarize my own arguments on what I believe is a purely semantic question. In strict chemical terms, according to the IUPAC definition, neither double-stranded DNA (dsDNA) nor its individual separated strands is a molecule but, as stated in the Wikipedia article, a polyatomic ion. If one extends the term ‘...


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