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משתמש:בנצי/ארגז חול: ספנסר וולס

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תבנית:Infobox Scientist Spencer Wells (born April 6 1969 in Georgia, United States) is a geneticist and anthropologist, an Explorer-in-Residence at the National Geographic Society, and Frank H.T. Rhodes Visiting Professor at Cornell University. He leads The Genographic Project.

Education עריכה

Wells grew up in Lubbock, Texas and started college at age 16.

Work עריכה

Wells did his Ph.D. work under Richard Lewontin, and later did postdoctoral research with Luigi Luca Cavalli-Sforza and Sir Walter Bodmer. His work, which has helped to establish the critical role played by Central Asia in the peopling of the world, has been published in journals such as Science, American Journal of Human Genetics, and the Proceedings of the National Academy of Sciences.

He wrote the book The Journey of Man: A Genetic Odyssey (2002), which explains how genetic data has been used to trace human migrations over the past 50,000 years, when modern humans first migrated outside of Africa. According to Wells, one group took a southern route and populated southern India and southeast Asia, then Australia. The other group, accounting for 90% of the world's non-African population (some 5 billion people as of late 2006), took a northern route, eventually peopling most of Eurasia (largely displacing the aboriginals in southern India, Sri Lanka and Southeast Asia in the process), North Africa and the Americas. Wells also wrote and presented the PBS/National Geographic documentary of the same name. By analyzing DNA from people in all regions of the world, Wells has concluded that all humans alive today are descended from a single man who lived in Africa around 60,000 - 90,000 years ago, a man also known as Y-chromosomal Adam.[1]

Since 2005, Wells has headed The Genographic Project, undertaken by the National Geographic Society, IBM and the Waitt Family Foundation, which is adding to our knowledge of human history by analyzing DNA samples from around the world, thereby creating a picture of how our ancestors populated the planet.

He is quoted to say "As often happens in science, technology has opened up a field to new ways of answering old questions—often providing startling answers."

As director of National Geographic Genographic Project he said this about the possibility of two Human species living today together: "We don't know how long it takes for hominids to fission off into separate species, but clearly they were separated for a very long time" [2] This question may be estimated by comparing other species with similar speed of reproduction, media have own deductible methods.[3]

Personal עריכה

Wells lives in Washington, D.C. with his wife, documentary filmmaker Pamela Caragol Wells. He has two daughters, Margot and Sasha, from his first marriage.

Awards עריכה

Books עריכה

  • The Journey of Man: A Genetic Odyssey, 2002 (Penguin, UK; Princeton University Press and Random House, USA; Fischer Verlag, Germany; Longanesi, Italy; Oceano, Spain/Latin America; Ucila International, Slovenia; Dokoran, Czech Republic; Akkord, Hungary; Oriental Press, China; Basilico, Japan; ScienceBooks, Korea; Yurt, Turkey; CD Press, Romania)
  • Deep Ancestry: Inside the Genographic Project, 2006 (National Geographic) ISBN 1426201184

Films עריכה

See also עריכה

References עריכה

  1. ^ Documentary Redraws Humans' Family Tree
  2. ^ BBC Human line 'nearly split in two'
  3. ^ Chen, Fc; Li, Wh (2001). "Genomic divergences between humans and other hominoids and the effective population size of the common ancestor of humans and chimpanzees". American journal of human genetics. 68 (2): 444–56. doi:10.1086/318206. ISSN 0002-9297. PMC 1235277. PMID 11170892. {{cite journal}}: פרמטר לא ידוע |month= (עזרה)תחזוקה - ציטוט: multiple names: authors list (link)

External links עריכה


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