Unfortunately for this particular fundie, real science based upon evidence obtained from observational reality once again delivers a no-lube ramming to his tosh.
I cite the following scientific paper:
Initial sequence of the chimpanzee genome and comparison with the human genome by the Chimpanzee Genome Sequencing Consortium (list of workers at the end of the article, a total of 67 scientists including Svante Pääbo, who is one of the leading contributors to human evolutionary genetics).
The original paper, published in Nature in September 2005, can be found here, and the findings are as follows:
Specific Detailed Findings
[1] Single-nucleotide substitutions occur at a mean rate of 1.23% between copies of the human and chimpanzee genome, with 1.06% or less corresponding to fixed divergence between the species.
[2] Regional variation in nucleotide substitution rates is conserved between the hominid and murid genomes, but rates in subtelomeric regions are disproportionately elevated in the hominids.
[3] Substitutions at CpG dinucleotides, which constitute one-quarter of all observed substitutions, occur at more similar rates in male and female germ lines than non-CpG substitutions.
[4] Insertion and deletion (indel) events are fewer in number than single-nucleotide substitutions, but result in ~1.5% of the euchromatic sequence in each species being lineage-specific.
[5] There are notable differences in the rate of transposable element insertions: short interspersed elements (SINEs) have been threefold more active in humans, whereas chimpanzees have acquired two new families of retroviral elements.
[6] Orthologous proteins in human and chimpanzee are extremely similar, with ~29% being identical and the typical orthologue differing by only two amino acids, one per lineage.
[6] The normalized rates of amino-acid-altering substitutions in the hominid lineages are elevated relative to the murid lineages, but close to that seen for common human polymorphisms, implying that positive selection during hominid evolution accounts for a smaller fraction of protein divergence than suggested in some previous reports.
[7] The substitution rate at silent sites in exons is lower than the rate at nearby intronic sites, consistent with weak purifying selection on silent sites in mammals.
[8] Analysis of the pattern of human diversity relative to hominid divergence identifies several loci as potential candidates for strong selective sweeps in recent human history.
Notice in particular that fully twenty nine percent of the orthologous proteins in humans and chimpanzees are identical. Which is a degree of relatedness akin to that between each of us and our grandparents genetically speaking (since we inherit 50% of our genes from each parent, we therefore inherit 25% of our genes from each grandparent - therefore the comparison is apposite). This is a result obtained from thousands of hours of actual laboratory work involving analysis of real human and chimpanzee DNA. In other words, evidence for common descent.
Message to fundie: you LOSE and you FAIL.
(Note: if anyone has a problem obtaining the original paper, chances are it's because a subscription to Nature is required).
