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Dictionary » V » Variant Variantvariant Something which differs in form from another thing, though really the same; as, a variant from a type in natural history; a variant of a story or a word. Origin: Cf. F. Variante. (biology) a group of organisms within a species that differ in trivial ways from similar groups; a new strain of microorganisms. ![]()
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Results from our forumcellular mechanisms that result in symptoms of cholera... The gene encoding the cholera toxin is introduced into V. cholerae by horizontal gene transfer. Virulent strains of V. cholerae carry a variant of temperate bacteriophage called CTXf or CTXφ.
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identifying 2 unknown bacteriasFirst one seems to be a non-motile variant of E. coli. Second one is either Streptococcus or Enterococcus. The test results you report for that bacteria are for tests designed to ID enterics. For this one you need to do hemolysis, bacitracin, ...
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Re: Flaws of Life in a Tube... never analyzed these even though this is his first experiment using hydrogen sulfide. In the new research, the team analyzed samples from another variant of the experiment performed in 1958 in which Miller used carbon dioxide and hydrogen sulfide gas in the mixture. It was "lost" for ...
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Theories - Origin of Life... of other factors that would affect the strength of the selection pressure on this mutation. The theory of natural selection says that favorable variants will tend to increase in populations, but it does not say that every possible favorable variant must come into existence - that's the random ...
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Re: Theories - Origin of Life... to stick out of the protein, which in turn causes the proteins to clump together. Individuals who are homozygous recessive for the disease-causing variant are quite ill; individuals who are heterozygous, however, rarely experience symptoms. They still make sickle-shaped cells, but those cells generally ...
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