For you people who think God "demonized" a snake as per the Bible I thought I would post this. Of course those who are creationists may wish to make note of this too.
Interesting stuff regarding genes. On an interest scale for me, this study comes close to the Russian scientific study on how after years of only mating the tamest foxes, scientists discovered that the foxes "DNA" not change but triggered other genes and other parts of the DNA to make tame foxes with droopy ears and different colours.
http://www.science.psu.edu/alert/Hedges1-2004.htm
hawk