Abstract: A composition including (a) a solid support having a surface; (b) a first plurality of nucleic acids immobilized on the surface, wherein the nucleic acids in the first plurality each include the P7 primer sequence (5?-CAAGCAGAAGACGGCATACGA-3?); and (c) a second plurality of nucleic acids immobilized on the surface, wherein the nucleic acids in the second plurality each include the P5 primer sequence (5?-AATGATACGGCGACCACCGA-3?).

Abstract: The invention relates to the preparation of a hydrogel surface useful in the formation and manipulation of arrays of molecules, particularly polynucleotides and to the chemical modification of these and other arrays. In particular, the invention relates to a method of preparing a hydrogel immobilised to a solid support comprising polymerising on the support a mixture of a first comonomer which is acrylamide, methacrylamide, hydroxyethyl methacrylate or N-vinyl pyrrolidinone and a second comonomer which is a functionalised acrylamide or acrylate.

Abstract: The invention relates to methods for pairwise sequencing of a polynucleotide template which result in the sequential determination of nucleotide sequence in two distinct and separate regions of the polynucleotide template.

Abstract: The invention provides a hairpin polynucleotide, having a loop and a stem region, characterised in that a sulfur-based nucleophile is attached to an internal nucleotide in the hairpin through a linker to enable binding to a solid support.

Abstract: There is disclosed a method for determining the identity of one or more mutations or single nucleotide polymorphisms (SNPs) in a genome, comprising: a contacting a sample genome, under conditions which permit template dependant oligonucleotide ligation, with a plurality of different oligonucleotide molecules which comprise (i) a first set of oligonucleotides each comprising a sequence of nucleotides that is complementary to a region on said genome that includes a known SNP site and which oligonucleotides are complementary to said region other than at a base at or near the 5? end of said oligonucleotides that is to be tested for complementarity to a base at the SNP site, each of said oligonucleotides comprising a unique label to identify both the base to be tested and the position of the SNP to be scored, (ii) a second set of oligonucleotides each comprising a sequence of nucleotides complementary to a region on said target genome for hybridisation with said target genome adjacent the 5? end of an oligonucleot