Gut bugs may have guided the evolution of life


	Gut bugs may have guided the evolution of life

Mohir

5-27-2008 7:05 AM

770 views

tags:

evolution

Mohir says:

They found more than 20,000 different kinds of bacteria. But the closer two species were on the tree of life, the more bacterial species they had in common living in their guts.

4 Comments |

Add a Comment

5-27-2008 8:35 AM

Fast T friend

Gutsy evolution

5-27-2008 1:58 PM

Socratoad

Very informative.
Thanks.

6-1-2008 2:47 PM

Silkweaver

Read a book named "Vitals" by Greg Bear.

6-1-2008 3:51 PM

Mohir

Read a book named "Vitals" by Greg Bear.

Did read it SilkWeaver

great idea,
yet overdone for my taste

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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/659e1cc6-d709-45d9-a072-faad6896fffb/6169845A-AF08-4E01-936D-7D91355EF2E5/" 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.newscientist.com/channel/life/dn13961-gut-bugs-may-have-guided-the-evolution-of-life.html?feedId=online-news_rss20" href="http://www.newscientist.com/channel/life/dn13961-gut-bugs-may-have-guided-the-evolution-of-life.html?feedId=online-news_rss20" style="font-size: 11px;">www.newscientist.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.newscientist.com/channel/life/dn13961-gut-bugs-may-have-guided-the-evolution-of-life.html?feedId=online-news_rss20"><P>The history of evolution could be written in an animal's excrement. A new analysis of faeces from dozens of mammals, including humans, suggests that gut-dwelling microbes might shape animal evolution.</P></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.newscientist.com/channel/life/dn13961-gut-bugs-may-have-guided-the-evolution-of-life.html?feedId=online-news_rss20"><P>Trillions of mostly harmless bacteria and other microbes inhabit the guts of all mammals, outnumbering the number of mammalian cells by 10 to one.</P></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.newscientist.com/channel/life/dn13961-gut-bugs-may-have-guided-the-evolution-of-life.html?feedId=online-news_rss20"><P>Now, a census of the microbes living in 60 mammals, from cows to kangaroos to <A target="NS" href="http://www.bristolzoo.org.uk/learning/animals/mammals/capybara" linkindex="62">capybaras</A>, has found that closely related animals and those with similar diets tend to have the same species of gut microbes.</P></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.newscientist.com/channel/life/dn13961-gut-bugs-may-have-guided-the-evolution-of-life.html?feedId=online-news_rss20"><P>Scientists have long known that our stomachs team up with harmless bugs, but we are only beginning to appreciate the breadth of bacterial diversity in our bellies. By reading the chemical letters of a molecule called 16s ribosomal RNA – a cousin to DNA – researchers can catalogue bacterial species and conduct a rough census of their numbers.</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/6169845A-AF08-4E01-936D-7D91355EF2E5/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>

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