we share 50% of our dna with every living thing on this planet, including the hemp plant the dog and even a tree.

thats what i was talking about the IDIC therie.
I.D.I.C
Infinate
Diversity in
Infinate
combinations

thats why we have such a broad spectrum of life shat shares the same basic dna.
uv interferance in diferant enviroments caused diferant mutations.
thats how we evolved from apes and there are still apes.
for example one group of our ansestor apes dna mutated by uv interfearance
but the dna of a neighboring tribe didnt, thus they remain still apes or apelike
and our tribe evolves. thats evolution and why we have apes and humans evolving together from a single dna strand.
but if enviromental conditions were diferant then so would your twin even slightly be differant.