I never said that we came from chimps. Perhaps you should reread my post:
"That isn't assumed at all. If we went back 5 million years and started with the same common ancestor, there is no expectation that chimps and humans would be the expected outcome. Things could go very differently due to the stochastic nature of evolution."
I clearly stated that humans and chimps evolved from a common ancestor.
Also, shared ancestry between humans and chimps is not assumed. It is a conclusion supported by evidence. In fact, I discuss the evidence in this thread:
http://www.christianforums.com/threads/the-new-retrovirus-thread.7942101/
When you have evidence, it isn't an assumption. It's as if you are claiming that we have to assume a suspect is guilty in order to get a DNA match or a fingerprint match.
Why are we different? Isn't it because our genomes are different?
No such assumption is used. It is very well founded conclusion that genotype leads to phenotype. Humans and chimps are different from each other because our genomes are different. You are trying to claim that changes in the genome can't lead to physical differences. The basic observation of the genetic and physical differences between chimps and humans, and our well evidenced knowledge of how genome leads to morphology, completely disproves your claim.
Whether we evolved from a common ancestor shared with chimps or not, your claim that genetic changes can't lead to physical changes is completely false.
You need to work on your reading comprehension.
"Through comparison with the human genome, we have generated a largely complete catalogue of the genetic differences that have accumulated
since the human and chimpanzee species diverged from our common ancestor, constituting approximately thirty-five million single-nucleotide changes, five million insertion/deletion events, and various chromosomal rearrangements."
http://www.nature.com/nature/journal/v437/n7055/full/nature04072.html
Also, shared ancestry was already well established through the use of evidence prior to the chimp genome paper. It isn't an assumption. It is one of the most solid scientific conclusions there are, backed by mountains of evidence.
The divergence of LTR's among shared ERV's demonstrates that they evolved from a common ancestor. The divergence between these repeat sections found in endogenous retroviruses forms the same phylogeny as the one formed by morphology. This is smoking gun evidence for evolution.
"Third, sequence divergence between the LTRs at the ends of a given provirus provides an important and unique source of phylogenetic information. The LTRs are created during reverse transcription to regenerate cis-acting elements required for integration and transcription. Because of the mechanism of reverse transcription, the two LTRs must be identical at the time of integration, even if they differed in the precursor provirus (Fig.
1A). Over time, they will diverge in sequence because of substitutions, insertions, and deletions acquired during cellular DNA replication."
http://www.pnas.org/content/96/18/10254.full
All you have proven is that you don't even know what the definition of assumption is.
Everything I have said is backed by observable and testable evidence. None of it is assumed.