Abstract: The present invention relates to a population of nucleic acids, said population comprising a first population of nucleic acids of the same length, said length being in the range of 5-15 nucleotides or units, said first population representing at least 1% of the possible different nucleic acid sequences for nucleic acids of said length, at least one nucleic acid in the first population being an LNA (Locked Nucleoside Analogues) oligomer. The population of oligonucleotides is preferably bonded to a solid support. The pluralities of nucleic acids are particularly useful in methods relating to the capture of target nucleic acids, or as probes, e.g. PCR probes. The invention also features LNA oligomers wherein the LNA units have SBC (Selective Binding Complementary) nucleobases.

Abstract: The invention relates to probes which are extendable useful as PCR probes and in probe libraries. The invention further relates to prevention of replication of a primer extension product in PCR reactions.

Abstract: The present invention provides novel quencher composition comprising anthraquinone quencher moieties. The anthraquinone quencher moieties are useful as quencher labels when attached to biomolecules such as natural or modified polynucleotides, oligonucleotides, nucleosides, nucleotides, carbohydrates and peptides. For example, polynucleotides can be labeled at the 3? terminus with fluorescence quencher solid support compositions, and polynucleotides can be labeled at internally or at the 5? terminus. The detectable probes may have a format like molecular beacons, scorpion probes, sunrise probes, conformationally assisted probes and TaqMan probes.