In terms of genomic coverage and accuracy, whole genome sequencing can broadly be classified into either of the following:
*A draft sequence, covering approximately 90% of the genome at approximately 99.9% accuracy
*A finished sequence, covering more than 95% of the genome at approximately 99.99% accuracy
Producing a truly high-quality finished sequence by this definition is very expensive. Thus, most human "whole genome sequencing" results are draft sequences (sometimes above and sometimes below the accuracy defined above).