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looks at the history of the double helix, the science behind DNA test kits for people who want to learn more about their ancestry, an interactive map of human migration over 200,000 years, DNA analysis tracing African-American lineage, and how mutations found in DNA can unlock the past. (Online NewsHour, National Science Foundation)
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Genetically speaking, humans are all one race: Homo sapiens sapiens. The Human Genome Project, an international research collaboration that mapped human DNA in 2001, discovered that 99.9 percent of people's DNA, the cell's genetic blueprint, is identical to that of everyone else on the planet, whether a family member or a stranger. |
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Map of human migration |
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