[Timmy]

Your post means nothing. You can't "prove" common ancestry unless you can trace it, and you can do no such thing. I could just as easily point out that people and dogs each have two eyes, two ears, one mouth, and one nose. Hence, common ancestry. But that would be nonsense to sensible people, although I can see some of your evo buddies thinking I may have hit on something. The only way to trace speciation is via the fossil record, or to see it occur. You can do neither. Pointing to similarities in "design" buys you, exactly, nothing. Car designers use 99% of the same features. I imagine a Creator of nature would do likewise.

[cinFLA]

I could just as easily point out that people and dogs each have two eyes, two ears, one mouth, and one nose. Hence, common ancestry.

I have a brain so we must not have a common ancestor.

[Stultis]

To reprieve, I linked Timmy to a couple descriptions, the second and more detailed one with ample references to the original literature, demonstrating the matching of complex banding patterns on one human chromosome with those on two separate ape chromosomes:

A Translocation Between Man and Chimpanzee Chromosomes

and...

http://www.gate.net/~rwms/EvoEvidence.html (Click on "Comparison of the Human and Great Ape Chromosomes as Evidence for Common Ancestry" in the second paragraph of the introduction.)

The second link went far beyond the correspondence in the banding patterns. It provided two lines of detailed and specific evidence that a fusion event had indeed occured along the length of the single human chromosome. What's more this evidence places the fusion exactly where it needs to be in order to create the homology between the two ape and one human chromosomes.

But the best response Timmy can manage is:

I could just as easily point out that people and dogs each have two eyes, two ears, one mouth, and one nose. Hence, common ancestry.

By a very liberal stretch, this might be considered analogous to the complex patterns of alternating light and dark chromosome bands of varying length, formed by the complex architecture of the tightly packed DNA and nuclear proteins. But it certainly is absurd as an anology to the "the remnants of a telomere and centromere (that should never have existed) [being] found at exactly the positions predicted by a naturalistic fusion of the chimp ancestor chromosomes 2p and 2q".

But read the links and judge for yourselves.

[Junior]

I could just as easily point out that people and dogs each have two eyes, two ears, one mouth, and one nose. Hence, common ancestry.

And you would be right. We do share a common ancestor with dogs (and with all other mammals). And mammals share a common ancestor with reptiles and birds, and so on.