Junk Arguments about Parasitic DNA
Joe Nexnelsrent dropped by the Darwin Ranch (out Folly Road near Deception Pass) for a symposium on "junk" DNA. It did not go well. Some of these owlhoots still cling to the notion that the human genome has vestiges from our evolutionary past, even though that nonsense has been debunked.
Parasites (the Greek root word essentially means "eating at the table of another") are a poor comparison. Non-coding DNA can resemble parasitic behavior in the way it spreads, but it does not drain a host. The science and logic involved should bemarrass serious scientists.
DNA background image: RGBStock / Tomislav Alajbeg |
The genomes of organisms are not only made of protein-coding genes. In fact, protein-coding genes make up only a small percentage of the genome. Most of the genome consists of non-coding sequences, often referred to as “junk DNA.” Transposable elements are part of the non-coding DNA and are sometimes referred to as “parasitic DNA.” Transposable elements (TEs) are termed parasitic because they can replicate and spread within the genome of an organism. Thus some evolutionists have often “blindly and rigidly” accepted the idea that transposable elements are selfish junk. But is that narrative true?
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One argument commonly associated with the parasitic DNA narrative is that humans and chimps share large quantities of similar DNA sequences, usually termed SINE and LINE elements. Of particular interest are the Alu elements, a type of SINE that is estimated to make up about 11% of the human genome. . . . Others have argued that Alu elements serve as “molecular fossils,” providing clues to genetic ancestry based on identical insertion points.
Read the entire article and see yet another thing that makes Darwin sad. It is found at "Parasitic DNA?"