If you want more info on the evolutionary source of morality, I can highly recommend Matthijs van Veelen's dissertation 'Survival of the fair', in which he makes use of evolutionary models and the game theory to explain the origins of morality. During his preparation he was heavily criticized by Dutch christians. They deemed an evolutionary approach to immorality a gross insult to the christian community. They even claimed Van Veelen's real purpose was to design a fascist theory with his fuzzy mathematics and his disgusting evolutionary biology. It's important to note the Netherlands also have a Bible Belt, a region in the north of the country where small groups of fundamentalist christians exert influence on societal issues: the ChristenUnie is a part of the Dutch government.
H.