From a Few Genes, Life’s Myriad Shapes


	From a Few Genes, Life’s Myriad Shapes

Djiezes

6-26-2007 7:16 AM

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tags:

evolution, genetics, development, dna, genomics, science, evo-devo, species, life

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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/2341286d-31ac-4be3-a782-6a8d1e708f9b/FF316E38-B6A5-4212-95E3-A334747BAE9B/" 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/26devo.html?ex=1340510400&en=27100a52a8c18671&ei=5088&partner=rssnyt&emc=rss" href="http://www.nytimes.com/2007/06/26/science/26devo.html?ex=1340510400&en=27100a52a8c18671&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/26devo.html?ex=1340510400&en=27100a52a8c18671&ei=5088&partner=rssnyt&emc=rss"><NYT_HEADLINE _moz-userdefined="" type=" " version="1.0">
From a Few Genes, Life’s Myriad Shapes
</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/26devo.html?ex=1340510400&en=27100a52a8c18671&ei=5088&partner=rssnyt&emc=rss">Just coming into its own as a science, evo-devo is the combined study of evolution and development</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/26devo.html?ex=1340510400&en=27100a52a8c18671&ei=5088&partner=rssnyt&emc=rss">what these scientists are finding is that development, a process that has for more than half a century been largely ignored in the study of evolution, appears to have been one of the major forces shaping the history of life on earth.</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/26devo.html?ex=1340510400&en=27100a52a8c18671&ei=5088&partner=rssnyt&emc=rss">For starters, evo-devo researchers are finding that the evolution of complex new forms, rather than requiring many new mutations or many new genes as had long been thought, can instead be accomplished by a much simpler process requiring no more than tweaks to already existing genes and developmental plans.</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://content7.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/26devo.html?pagewanted=3&ei=5088&en=27100a52a8c18671&ex=1340510400&partner=rssnyt&emc=rss" href="http://www.nytimes.com/2007/06/26/science/26devo.html?pagewanted=3&ei=5088&en=27100a52a8c18671&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/26devo.html?pagewanted=3&ei=5088&en=27100a52a8c18671&ex=1340510400&partner=rssnyt&emc=rss"> “There aren’t new genes arising every time a new species arises,” said Dr. Brian K. Hall, a developmental biologist at Dalhousie University in Nova Scotia.  “Basically you take existing genes and processes and modify them, and that’s why humans and chimps can be 99 percent similar at the genome level.”</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/FF316E38-B6A5-4212-95E3-A334747BAE9B/blog/" title="blog or email this clip"><img src="http://content8.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>