Humans Have Spread Globally, and Evolved Locally


	Humans Have Spread Globally, and Evolved Locally

Djiezes

6-26-2007 7:58 AM

1221 views

tags:

evolution, homo sapiens, dna, race, genetics, natural selection, ancestry, science, culture, history

Djiezes says:

Graphic "Genes and Human Migration": http://graphics8.nytimes.com/images/2007/06/25/science/26human-graphic.gif

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<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://www.clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/8eae3e8a-2d19-4516-a919-b34e366a9849/53823D96-55D9-4C36-A33C-9A6EF67B6ED2/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://www.nytimes.com/2007/06/26/science/26human.html?ex=1340510400&en=0f5be7d7ceab0ad7&ei=5088&partner=rssnyt&emc=rss" href="http://www.nytimes.com/2007/06/26/science/26human.html?ex=1340510400&en=0f5be7d7ceab0ad7&ei=5088&partner=rssnyt&emc=rss" style="font-size: 11px;">www.nytimes.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.nytimes.com/2007/06/26/science/26human.html?ex=1340510400&en=0f5be7d7ceab0ad7&ei=5088&partner=rssnyt&emc=rss"><NYT_HEADLINE _moz-userdefined="" type=" " version="1.0">
Humans Have Spread Globally, and Evolved Locally
</NYT_HEADLINE></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.nytimes.com/2007/06/26/science/26human.html?ex=1340510400&en=0f5be7d7ceab0ad7&ei=5088&partner=rssnyt&emc=rss">People have continued to evolve since leaving the ancestral homeland in northeastern  Africa some 50,000 years ago, both through the random process known as genetic drift and through natural selection.</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.nytimes.com/2007/06/26/science/26human.html?ex=1340510400&en=0f5be7d7ceab0ad7&ei=5088&partner=rssnyt&emc=rss">people in the various continents adapted to new diseases, climates, diets and, perhaps,  behavioral demands.</blockquote><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://www.clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content6.clipmarks.com/images/clip-icon.gif" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://www.nytimes.com/2007/06/26/science/26human.html?pagewanted=2&ei=5088&en=0f5be7d7ceab0ad7&ex=1340510400&partner=rssnyt&emc=rss" href="http://www.nytimes.com/2007/06/26/science/26human.html?pagewanted=2&ei=5088&en=0f5be7d7ceab0ad7&ex=1340510400&partner=rssnyt&emc=rss" style="font-size: 11px;">www.nytimes.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.nytimes.com/2007/06/26/science/26human.html?pagewanted=2&ei=5088&en=0f5be7d7ceab0ad7&ex=1340510400&partner=rssnyt&emc=rss"><P>The emerging lists of selected human genes may open new insights into the interactions between history and genetics. “If we ask what are the most important evolutionary events of the last 5,000 years, they are cultural, like the spread of agriculture, or extinctions of populations through war or disease,” said Marcus Feldman, a population geneticist at Stanford. These cultural events are likely to have left deep marks in the human genome.</P></blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/53823D96-55D9-4C36-A33C-9A6EF67B6ED2/blog/" title="blog or email this clip"><img src="http://content7.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>