Hi jigsaw207
... some creationists claim that Neanderthals are humans with deformed skeleton or the adaptation makes them look like as they are.
My question is: do you think the fact that we share more than 99% of our genes with Neanderthals supports creationists claim ?
If we balance the evidence of 99% similarity against the mtDNA evidence that neanders and cro-magnons did not inter-breed in spite of mucho opportunity to do so, means that
Homo neanderthalis and
Homo sapiens are indeed different species, and thus the "deformity or adaptation" is the evidence of speciation.
We can then also compare the relative similarity of neanders with chimps and with sapiens, and conclude that as the difference is similar, that chimps are also evidence of speciation in a slightly more distant past: the differences plot as a triangle rather than a line, as there are differences between neander and chimp where each shares different traits with homo and similarities they share that sapiens does not - showing that both neander and sapiens diverged in different ways from a common ancestor that was more similar to chimps.
There is an old thread that compares the mtDNA of these three lineages.
Enjoy.
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