Reading 3-2

Most of the links in this speculative hypothesis are

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Unformatted text preview: leistocene (11000 BC), and after the end of the Pleistocene they occurred at very different times, ranging from about 8500 BC (in the Fertile Crescent) to about 2500 BC (eastern North America). Most of the links in this speculative hypothesis are in obvious need of testing. Multiple versus single domestications A long-standing question concerns whether each crop and livestock species stems from a single domestication event within a restricted NATURE | VOL 418 | 8 AUGUST 2002 | www.nature.com/nature © 2002 Nature Publishing Group insight review articles not even spread the mere 2,000 km north to Mexico and south to the Andes, respectively, by the time that Europeans arrived in AD 1492. Eurasia Primary versus secondary homelands Americas Africa Figure 3 The continental major axis is oriented east–west for Eurasia but north–south for the Americas and Africa. The spread of food production tended to occur more rapidly along east–west axes than along north–south axes, mainly because locations at the same latitudes required less evolutio...
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This note was uploaded on 12/10/2012 for the course HORT 306 taught by Professor Staff during the Fall '08 term at Purdue.

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