Detecting DNA sequence variations

摘要

A method of analysing a polynucleotide target involves incubating the target with an oligonucleotide probe, generally an array of immobilised oligonucleotide probes, to form a duplex, and using ligase or polymerase to extend one chain of the duplex. A point mutation or variable number tandem repeat section may be analysed. Arrays of immobilised oligonucleotides are provided for use in the method.