The Human Genome Project (HGP) is an international scientific research project with the goal of determining the sequence of chemical base pairs which make up human DNA, and of identifying and mapping all of the genes of the human genome from both a physical and functional standpoint. It remains the world’s largest collaborative biological project. The project was proposed and funded by the US government; planning started in 1984, the project got underway in 1990, and was declared complete in 2003. A parallel project was conducted outside of government by the Celera Corporation, or Celera Genomics, which was formally launched in 1998. Most of the government-sponsored sequencing was performed in twenty universities and research centers in the United States, the United Kingdom, Japan, France, Germany, and China.Human Genome Project Completion: Frequently Asked Questions The Human Genome Project originally aimed to map the nucleotides contained in a human haploid reference genome (more than three billion). The “genome” of any given individual is unique; mapping “the human genome” involves sequencing multiple variations of each gene. The project did not study the entire DNA found in human cells; some heterochromatic areas (about 10% of the total genome) remain unsequenced.