Env Sci Blog

Mitochondrial Eve

In the field of human genetics, Mitochondrial Eve refers to the most common recent ancestor (MRCA) of modern humans. In other words, she was the most recent woman from whom all living humans today descend, on their mother's side, and through the mothers of those mothers and so on, back until all lines converge on one person. Because all mitochondrial DNA (mtDNA) is generally passed from mother to offspring without recombination, all mitochondrial DNA (mtDNA) in every living person is directly descended from hers by definition.

Tribes of Man

The theory is that all humans originated from north eastern Africa and from there spread across the world. Along the way each of the different groups began to develop traits, or mutations in their DNA. These mutations in their DNA was due in part to environmental changes Peoples that moved to colder climates needed less energy to be devoted to melanin production, and instead used it to build up fats in the body.

Human Genome Project

Completed in 2003, the Human Genome Project (HGP) was a 13-year project coordinated by the U.S. Department of Energy and the National Institutes of Health. During the early years of the HGP, the Welcome Trust (U.K.) became a major partner; additional contributions came from Japan, France, Germany, China, and others. See our history page for more information.

Project goals were to

identify all the approximately 20,000-25,000 genes in human DNA,

determine the sequences of the 3 billion chemical base pairs that make up human DNA,

store this information in databases,

improve tools for data analysis,

transfer related technologies to the private sector, and

address the ethical, legal, and social issues (ELSI) that may arise from the project.

Though the HGP is finished, analyses of the data will continue for many years. Follow this ongoing research on our Milestones page. An important feature of the HGP project was the federal government's long-standing dedication to the transfer of technology to the private sector. By licensing technologies to private companies and awarding grants for innovative research, the project catalyzed the multibillion-dollar U.S. biotechnology industry and fostered the development of new medical applications.

Individuals with Unique attributes.