SmarterThanYou said:I have to disagree with this, only because all too often with 'identical' twins, there is such a huge personality difference. The basic genetics may be 'identical', but its all about the fringe dna that defines who they are.
I'm not sure what you mean by "fringe DNA." Do you mean junk DNA?
DNA is DNA. It is a strip of genetic code carried in every cell in our bodies. In identical twins, the DNA is identical. Personalities come from a variety of factors. One is genetic predisposition, of which scientists have never found a gene shown to cause homosexual behavior. The other factors are environmental factors-- The parenting, the treatment or acceptance by peers, the reaction to the sibling/other twin, the choices one makes, etc. which are built up as one lives life.