Human Genome Project
International project to sequence the entire human genome.
The Human Genome Project (HGP) was an international scientific research project with the goal of determining the base pairs that make up human DNA, and of identifying, mapping and sequencing all of the genes of the human genome from both a physical and a functional standpoint. It started in 1990 and was completed in 2003, and was the world's largest collaborative biological project. The project was formally founded in 1990 by the US Department of Energy and the National Institutes of Health, with funding from the US government and numerous other groups from around the world.
- started
- 1990
- completed
- 2003 (declared complete on 14 April 2003)
- funding
- ~$2.7 billion (equivalent to about $5 billion in 2021)
- genome_covered
- ~92% of the genome (euchromatic regions)
- full_gapless_sequence
- January 2022 (22 autosomes and X chromosome); Y chromosome published August 2023
- major_funders
- US Department of Energy and National Institutes of Health
Lore & Background
Planning for the project began in 1984 by the US government, and it officially launched in 1990. The idea for obtaining a reference sequence had three independent origins: Robert L. Sinsheimer, Renato Dulbecco, and Charles DeLisi. Ultimately it was the actions by DeLisi that launched the project. In 1990 the two major funding agencies, DOE and the National Institutes of Health, developed a memorandum of understanding to coordinate plans and set the clock for the initiation of the Project to 1990. A working draft of the genome was announced in 2000 and the papers describing it were published in February 2001. A more complete draft was published in 2003, and genome 'finishing' work continued for more than a decade after that.
Reader's Guide
The Human Genome Project was a 13-year-long publicly funded project that aimed to map the complete set of nucleotides contained in a human haploid reference genome, of which there are more than three billion. The genome of any given individual is unique; mapping the human genome involved sequencing samples collected from a small number of individuals and then assembling the sequenced fragments to get a complete sequence for each of the 23 human chromosome pairs. Therefore, the finished human genome is a mosaic, not representing any one individual. Much of the project's utility comes from the fact that the vast majority of the human genome is the same in all humans. The project ended up costing less than expected, at about $2.7 billion. Most of the genome was mapped over a two-year span. The project was not able to sequence all of the DNA found in human cells; rather, the aim was to sequence only euchromatic regions of the nuclear genome, which make up 92.1% of the human genome. The remaining 7.9% exists in scattered heterochromatic regions such as those found in centromeres and telomeres. Level 'complete genome' was achieved in May 2021, with only 0.3% of the bases covered by potential issues. The full gapless sequence containing 22 autosomes and the X chromosome was published in January 2022, making it the first fully sequenced human genome. The full sequence of the Y chromosome was only published in August 2023 due to challenges with sequencing and assembling, caused by its highly repetitive nature.
Did You Know?
- The Human Genome Project was declared complete on 14 April 2003, two years earlier than planned.
- A parallel project was conducted outside the government by the Celera Corporation, formally launched in 1998.
- The full gapless sequence of the Y chromosome was only published in August 2023 due to its highly repetitive nature.
- The project cost about $2.7 billion, less than the expected $3 billion.
Frequently Asked Questions
Who is Human Genome Project?
The Human Genome Project is an international collaborative research effort formally launched in 1990 by the US Department of Energy and the National Institutes of Health. Its core mission was to identify, map, and sequence every gene in the human genome from both a physical and a functional perspective.
What is Human Genome Project's role in genetics?
Think of it as the foundational reference sequence for all of human genetics—it determined the base-pair order of human DNA and catalogued the genes within it. It served as the world's largest collaborative biological undertaking, setting the baseline that virtually every modern genetics study builds upon.
How does Human Genome Project's story end?
The project was officially declared complete on 14 April 2003, having covered roughly 92% of the euchromatic genome. The truly gapless sequence of the 22 autosomes and X chromosome wasn't finished until January 2022, and the Y chromosome sequence was published in August 2023.
Why is Human Genome Project important?
It gave the entire scientific community a complete reference map of human DNA, transforming genetics from a field of isolated gene discoveries into one grounded in a full genomic context. Without it, modern applications like personalized medicine, genetic disease screening, and evolutionary biology would lack their foundational dataset.
How much did Human Genome Project cost?
The project drew approximately $2.7 billion in funding (roughly $5 billion in 2021 dollars) from the US government and numerous international contributors. That massive investment produced a single reference sequence that now underpins trillions of dollars in biotech and pharmaceutical research.
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