METHOD FOR DETECTING POLYMERASE INCORPORATION OF NUCLEOTIDES

Provided is a method, including hybridizing test primers to immobilized primers, wherein the immobilized primers include a predetermined sequence of nucleotides and are attached to a substrate through their 5-prime ends, individual test primers are complementary to a portion of each of at least some of the immobilized primers, and no more than one test primer molecule hybridizes to an immobilized primer molecule, extending, by only one nucleotide, at least some of the test primers with a polymerase according to templates, wherein said templates comprise immobilized primers hybridized to said test primers and nucleotides incorporated into extended test primers comprise a fluorescent tag, and detecting an amount of fluorescent test primers.