I think morality is something that we have evolved, something that we have obtained via our evolution. All morality really is, is judgements on how one should act, this is important because how people conduct themselves has a strong impact on the social environment around us. I think morality is extremely naturalistic thing. Morality requires emotional appeal at least for morality to be efficient. My moral opposition to murder is based on an emotional appeal, emotional appeal to my compassion (I don't like the idea of seeing other people die, it emotionally disturbs me), emotional appeal to selfishness (If my social environment is alright with people murdering each other, I am significantly more likely to be murdered), and empathy which connects our selfishness and compassion, (if I can feel another's pain, that will activate my capacity for compassion, and my capacity for selfishness, I will feel more emotionally disturbed by their pain because my mind allows me to feel their pain, and it will remind me why I don't want people to be ok with it, because I don't want to feel that pain myself). Our emotions in my opinion are a byproduct of our evolution, our emotions come from our mind, of which itself had to evolve.

Morals could have come around as the result of evolution, by means of gene propagation, and mimetic expression. (IE. the social contract)

Nature is a teacher and guide as to what is moral

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For the wrath of God is revealed from heaven against all ungodliness and unrighteousness of men who suppress the truth in unrighteousness .. because that which is known about God is evident within them .. for God made it evident to them .. for since the creation of the world his invisible attributes .. his eternal power and divine nature .. have been clearly seen .. being understood through what has been made .. so that they are without excuse .... Romans 1 http://www.gty.org/MediaPlayer/sermons/45-10 ..

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to reject the order of nature is to reject the author of nature

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The Declairation of Independance . . . When in the Course of human events, it becomes necessary for one people to dissolve the political bands which have connected them with another, and to assume among the powers of the earth, the separate and equal station to which >> the Laws of Nature and of Nature's God << entitle them, a decent respect to the opinions of mankind requires that they should declare the causes which impel them to the separation

People are very social creatures as are most apes and surviving as a social creature in wild without sharp claws or teeth and not a incredible amount of strength one would tend to rely on those around you. Basically what I'm trying to say is that due to a reliance on those around you and a life or death need to maintain a trust with and of those around you in order to stay in the group and increase your chances of survival (via Darwinism). so an underlying morality to your behavior would increase your chances to survive.

If you do not believe that behavior can be manipulated with genes, watch this video and please read the description.................