Genetic Divergence Of Man From Chimp Has Aided Human Fertility But Could Have Made Us More Prone To

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	Genetic Divergence Of Man From Chimp Has Aided Human Fertility But Could Have Made Us More Prone To

onleyone

11-27-2007 8:20 AM

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cancer, genes, growth, genome, tumor, sperm, cells, mutation

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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://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/cb2e5771-3e1d-4e31-b112-d16c56e80b86/6DF66C00-2ECD-45FA-BA3A-70D72FA72D7A/" 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.sciencedaily.com/releases/2005/05/050515151741.htm" href="http://www.sciencedaily.com/releases/2005/05/050515151741.htm" style="font-size: 11px;">www.sciencedaily.com</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://www.sciencedaily.com/releases/2005/05/050515151741.htm"><P>One of the more interesting observations occurred in some genes that govern cell death in sperm cells and tumor cells alike. Both types of cells use a mechanism called apoptosis -- a pathway that includes genes that program a cell's demise and death. During the production of sperm cells, for example, apoptosis kills many of the cells before they reach maturity. But mutations in these genes could inhibit apoptosis in some sperm cells, allowing more sperm to reach maturity, reproduce again and ensure that future cells will carry the gene that defuses early self-destruction.</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.sciencedaily.com/releases/2005/05/050515151741.htm"><P>Unfortunately, this same machinery also allows cancer cells to live on. The researchers suspect that some mutations that allow sperm cells to increase their chances of reproduction might also diminish an organism's ability to turn off tumor cell growth and fight cancer.</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/6DF66C00-2ECD-45FA-BA3A-70D72FA72D7A/blog/" title="blog or email this clip"><img src="http://content9.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>