The most fundemental definition of a Soul is basically you. You are your soul occupying a phisical body that looks like you. Basically your invisible until you occupy the body that represents you.
Scientifically this whole soul thing exist mainly on the electromagnetic spectrum. Huge word I know! What the electromagnetic spectrum is, is all the different kinds of energys in the Universe from light waves to radio waves to even Micro waves the list goes on for infanity. We phisically see a tiny portion of the entire spectrum. Phisically we can see, hear, taste and feel and smell. Well we see light waves through mainly color and white light which is all the colors combined. Those colors is just a tiny part of the electromagnetic spectrum. There is an infanit number of other frequencys we can't ever phisically sense. Now the soul based upon this science would be on another frequency of the Electromagnetic Spectrum. It would exist on a frquency that we can't pick up because our senses simply doesn't allow it. Because we see only light and color we will never see or hear or touch a soul as long as we occupy our body. The closest thing to our soul is our body.
Here is a model of the electromagnetic spectrum. We only see color a tiny portion of this scale. As you see in this model there are other frequencys we can't sense and this is only a tiny portion of whats on this scale. This scale is actually infanit that there are waves we don't even know yet we only know so much. Its imposible to make an entire full scale model of the Electro Magnetic Spectrum because it goes onto infinaty. The size is astronomical and it just defies logic. But if you think about it Heven the after life God it all exist somewhere on this scale. Somewhere where we can't sense it. Scientist are turning into believers because of this.
Now the issue in cloneing for me is that its unwise to play God because we are dealing with powers and sciences that we do not understand and fully can possess. We are not capable of possessing the power of God. And when we do play with such sciences the consequences of such an act can be utterally disasterous. Its not logical and its imoral. Its artificial and completely fake. A clone will not have a soul because a soul is a gift from God and only God can make souls. You guys don't even understand what a soul is. A soul is not just your inner self or some obscur being occupying a body. Its more than that its you which makes you special in the eyes of God. Even for those whome don't believe in God your still special in the eyes of God. For God does not hate because God knows what he created he created something good. What we would be createing is an assembly line of robots with some personality traits. A soul goes way beyond all logic inwhich we as a human race created. There are greater powers at work in the Universe and for us to sit here and say that we can duplicate a soul and take for granted of those powers is dangerious and ilogical.