The Human Genome Project began in 1990 to produce a large-scale reference sequence of human DNA. Centers divided mapping, cloning and sequencing across chromosomal regions, connecting short reads with longer physical maps. Instruments, computation and sample management supported the work. Locations and quality had to be recorded. Regular exchanges and public databases made developing sequences available to other researchers, while cooperation established shared requirements for data and assessment.
The draft published in 2001 supplied broad coverage. Teams then closed gaps, corrected errors and connected fragments. Completion was announced in 2003, followed by the 2004 assessment of the refined euchromatic sequence. Repeated and complex regions remained difficult and were addressed by later technologies. Finishing organized separate reads into more continuous material, improving the placement of genes and neighboring sequences and comparisons between samples.
The reference supported studies of variation, gene activity and disease-associated regions, giving laboratories common coordinates for discussion. Individual differences remained, and additional samples later broadened representation. Privacy, information and equitable access were part of the project’s social discussions and funding. Public sequence became material that could be revised and compared. Sequencing, analysis and clinical interpretation continued to develop after the project itself reached completion.
International Human Genome Sequencing Consortium · Finishing the Euchromatic Sequence of the Human Genome · 2004 · Nature 431, 931–945; DOI 10.1038/nature03001; project completion and sequence assessment
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