Mysterious DNA Found to Survive Eons of Evolution


	Mysterious DNA Found to Survive Eons of Evolution

mugofcoffee

10-9-2008 12:23 PM

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10-9-2008 3:10 PM

invictus

Very exciting stuff. The first 8 years of the new century have already deserved to be named as "the decade of genetics". Thanks, mugofcoffee.

10-9-2008 3:38 PM

darkduskx

They are DNA to turn us back into sea mammals just in case earth becomes inhabitable

10-9-2008 6:53 PM

mugofcoffee

@ Invictus: the discovery on genome and the brain always excites me: what we have learned so far is nothing in front of what we are yet to discover...
@ darkduskx:

10-9-2008 11:56 PM

tanyamm

Oh what secrets yet to be discovered. Exciting isn't it?

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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/dda1c2cb-d972-4dd9-985d-61d63c50df8f/F9E3261B-AE1D-40DB-BB55-106D6B458CDB/" 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.livescience.com/health/081009-mystery-dna.html" href="http://www.livescience.com/health/081009-mystery-dna.html" style="font-size: 11px;">www.livescience.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.livescience.com/health/081009-mystery-dna.html"><P>By <A href="http://www.livescience.com/php/contactus/author.php?r=cm">Clara Moskowitz</A>, LiveScience Staff Writer</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.livescience.com/health/081009-mystery-dna.html"><div align="center"><img src="http://content7.clipmarks.com/blog_cache/www.livescience.com/img/CCA2F49B-CEB7-4D1E-BAE9-F249F4BAA1F1" alt="" /></div></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.livescience.com/health/081009-mystery-dna.html"><DIV id="ri_caption">The mystery DNA spippets are about 300 times less likely than other regions of the genome to be lost during the course of mammalian evolution. Credit: Dreamstime</DIV></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.livescience.com/health/081009-mystery-dna.html"><P class="MsoNormal">
Scientists have discovered mystery snippets of mammal DNA
that have survived eons of evolution and yet have no apparent purpose. The
finding reveals just how much we don't know about the secrets hidden in our
genome and that of other animals.
</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.livescience.com/health/081009-mystery-dna.html"><P class="MsoNormal">
Most genes change throughout evolution via mutations; useless
ones eventually get weeded out of the population while the helpful
modifications take hold. However, about 500 regions of our DNA — <A href="http://www.livescience.com/health/060529_mm_genes.html">the body's
instruction code</A> made up of base pairs of molecules — have apparently
remained intact throughout the history of mammalian evolution, or the past 80
million to 100 million years, basically free of mutations. 
</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.livescience.com/health/081009-mystery-dna.html">Mutations are introduced into these regions just as
they are everywhere else, but they're swept out of the genome much more quickly,</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/F9E3261B-AE1D-40DB-BB55-106D6B458CDB/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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