gsicard too much sand for my truck lol [blockquote]The idea that inheritance is not just about which genes you inherit but whether these are switched on or off is a whole new frontier in biology. It raises questions with huge implications, and means the search will be on to find what sort of environmental effects can affect these switches.[/blockquote] http://www.bbc.co.uk/sn/tvradio/programmes/horizon/ghostgenes.shtml