DNA
There are two kinds of cloning right now. One is therapeutic cloning which is for coming up with cures for life threatening, really, really awful diseases. Then there is reproductive cloning, which is to make a human being out of your DNA and a donor egg.
I read that all dogs have wolf DNA in them, which seemed preposterous because my dog, Tucker, is... afraid of plastic bags blowing in the wind. I thought, 'How can Tucker have wolf in him? How can this be?' So I started researching it.
With genetic engineering, we will be able to increase the complexity of our DNA, and improve the human race. But it will be a slow process, because one will have to wait about 18 years to see the effect of changes to the genetic code.