Thanks Dennis. The book is interesting and becoming a slow read because I’m finding statements on every page that are making me scratch my head and ask, “How does he know this to be true.” The statement above is one example. Can you elaborate a bit? Why does the fact that two organisms on the phylogenetic tree with many common or near common genes necessitate an interpretation that they have a common ancestor? What are the details of this argument? How to you rule out that they weren’t intelligently designed that way? How is it that the “chance/natural selection” process is a more viable explanation that ID? This is actually a serious question and is currently my primary “stumbling block” to seeing the truth of evolution.
On page 33, you say as you compare dogs and humans, Humans, on the other hand, have a diminished sense of smell relative to dogs, and the reason became clear after we sequenced the human genome. Many of our olfactory receptor genes are damaged: they have numerous mutations in them that disrupt their ability to be transcribed or translated. The remains of these genes, however, persist in our genome because of the low error rate for copying chromosomes. Since the protein enzymes that copy DNA don’t know that these genes are defective, they copy them as faithfully as possible, just like any other DNA sequence. As a result, these genes persist for a long time as genetic fossils in our DNA. The historical name for these damaged remains of genes is “pseudogenes” or “false genes." They earned the name because they have many of the features expected of genes but cannot be transcribed and translated as a gene should be in order to produce a protein product.
This prompted in my head the following questions: “How do you know that humans have numerous mutations in the olfactory receptor genes? Could it be that they were designed that way because humans would be overwhelmed with such sensitive olfactory genes. With our much higher developed intellect/emotions, etc. could it be that their “smelly world” would be too much for the human psyche to deal with. Wolves on the other hand are singularly focused on smell since it leads to food and survival which are daily realities that must be dealt with. Wolves don’t have much time to do the social media thing and worry about likes/dislikes so for them the smelly world is normal and they’re able to cope.”
As you answer these questions, be on guard so that you don’t use circular reasoning to frame your answer. Also, be conscious of the “Einstellung effect.” (See the SA article on the science of bias)
McKnight, Scot. Adam and the Genome: Reading Scripture after Genetic Science (pp. 33-34). Baker Publishing Group. Kindle Edition. "