Which British prime minister joined the 2000 rough-draft genome announcement? Tony Blair did.
Blair joined U.S. President Bill Clinton in announcing the rough draft of the human genome on June 26, 2000. Their joint appearance highlighted the international character of the Human Genome Project and the close role of British researchers and institutions.
The United Kingdom was a major participant through the Wellcome Trust Sanger Institute, one of the leading sequencing centers in the public consortium. The project involved laboratories across the United States, the UK, Japan, France, Germany, China, and other countries.
This was a draft announcement, not the final completion of the project. Scientists published detailed draft results in 2001, while the HGP announced its formal completion in 2003. Blair is sometimes confused with Gordon Brown, who became prime minister later, in 2007.