Epigenetics | Clipmarks


	Epigenetics

delete101

6-23-2007 12:29 AM

520 views

tags:

dna

Add a Comment

Login to Comment. Not a member yet? Sign up

Today's Top Clips

visit the Top Clips page

View the Top Clips from June 23, 2007

Embed This Clip In Your Site...

<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/09dc6b28-b801-47b1-8477-cbb9b23b5e3d/376E85CB-B1CE-4B20-A12C-B8002C2C44D7/" 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://en.wikipedia.org/w/index.php?title=Epigenetics&oldid=139262050" href="http://en.wikipedia.org/w/index.php?title=Epigenetics&oldid=139262050" style="font-size: 11px;">en.wikipedia.org</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://en.wikipedia.org/w/index.php?title=Epigenetics&oldid=139262050"><H1 class="firstHeading">Epigenetics</H1></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://en.wikipedia.org/w/index.php?title=Epigenetics&oldid=139262050"><P><B>Epigenetics</B> is a term in biology used today to refer to features of <A title="Unicellular" href="http://en.wikipedia.org/wiki/Unicellular">unicellular</A> and <A title="Multicellular" href="http://en.wikipedia.org/wiki/Multicellular">multicellular</A> organisms (eg. <A title="Chromatin" href="http://en.wikipedia.org/wiki/Chromatin">chromatin</A> and <A title="DNA" href="http://en.wikipedia.org/wiki/DNA">DNA</A> modifications) that are stable over rounds of <A title="Cell" href="http://en.wikipedia.org/wiki/Cell">cell</A> <A title="Mitosis" href="http://en.wikipedia.org/wiki/Mitosis">division</A> but do not involve changes in the underlying <A title="DNA" href="http://en.wikipedia.org/wiki/DNA">DNA</A> sequence of the organism.<SUP class="reference" id="_ref-0"><A title="" href="#_note-0">[1]</A></SUP> These epigenetic changes play a role in the process of <A title="Morphogenesis" href="http://en.wikipedia.org/wiki/Morphogenesis">cellular differentiation</A>, allowing cells to stably maintain different characteristics despite containing the same genomic material. Epigenetic features are inherited when cells divide despite a lack of change in the DNA sequence itself and, although most of these features are considered dynamic over the course of development in multicellular organisms, some epigenetic features show transgenerational inheritance and are inherited from one generation to the next.<SUP class="reference" id="_ref-1"><A title="" href="#_note-1">[2]</A></SUP></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/376E85CB-B1CE-4B20-A12C-B8002C2C44D7/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>

Clipmarks: Home; New Clips; Top Clips; Dashboard

Popular Topics: News; Life; Science; Technology; Entertainment

Get Started: Sign Up; Install Clipping Tool; How Clipping Works; Clip-to-Blog™; ClipSearch

Tools and Resources: FAQ; ClipWeek; Top Clippers; Top Tags; Site Map

About Clipmarks: About Us; Contact; Blog; Copyright; Privacy; EULA

Search Options

Today's Top Clips