a genome has been reported. Characterization of an organism by defining every single variant of tens to thousands of rDNA repeat units present in a eukaryotic genome would be quite unreasonable. Here we provide an alternative approach for the characterization of a set of internal transcribed spacer sequences found within every rDNA repeat unit by implementing direct sequencing methodology. The prominent allelic variants and their relative amounts characterizing an individual can be described by a single sequencing electropherogram of the mixed amplicon containing the variants present within the genome. We propose a method for rational analysis of heterogeneity of multicopy genes by compiling a profile based on quantification of different sequence variants of the internal transcribed spacers of the freshwater sponge Ephydatia fluviatilis as an example
fluorophore from emitting light. Molecular Beacons Functioning: Molecular beacons can report the presence of specific nucleic acids from a homogeneous solution. In the presence of a complementary target, the "stem" portion of the beacon separates out resulting in the probe hybridizing to the target. Applications of Molecular Beacons Include: 1 . SNP detection 2 . Real-time nucleic acid detection. 3 . Real-time PCR quantification. 4 . Allelic discrimination and identification 5 . Multiplex PCR assays 6 . Diagnostic clinical assays 18.Suure võimsusega genotüpiseerimise võimalused 30 Suure võimsusega genotüpiseerimis tehnikad (high throughpout): Polümeraasipõhised ekstensioonitehnikad (a, b) - Polümeraasipõhised pürosekveneerimistehnikad(c) -Hübridisatsioonipõhised (d) -Alleelspetsiifilised ligatsioonitehnikad -Alleelspetsiifiline nukleaasi restriktsioon 19
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