Tyranny of the Gene Tempered by Junk DNA

The analogies between the genetic evolution of biological species and the cultural evolution of human societies have been brilliantly explored by Richard Dawkins in his book The Selfish Gene. The book is mainly concerned with biological evolution; the cultural analogies are only pursued in the last chapter. Dawkins's main theme is the tyranny which the rigid demands of the replication apparatus have imposed upon all biological species throughout evolutionary history. Every species is the pris...

 Make Mistakes

For evolution, which knows nothing, the steps into novelty are blindly taken by mutations, which are random copying “errors” in DNA. Most of these typographical errors are of no consequence, since nothing reads them! They are as inconsequential as the rough drafts you didn’t, or don’t, hand in to the teacher for grading. The DNA of a species is rather like a recipe for building a new body, and most of the DNA is never actually consulted in the building process. (It is often called “...

 DNA Divergence is in How You Count

It’s a common misconception that chimp DNA differs from Homo sapiens sapiens genes by only a single percent, but this number is apocryphal. In actuality, the degree of similarity of human and chimp genetic code depends mostly on how you count. Since all complex organisms from Earth possess great swaths of junk DNA inherited from a distant common ancestor, there tends to be startling similarity between many organisms. Sure, humans are like chimps—but they’re also like flatworms and fruit...

 WWW has Replaced Sex as Propagator of Junk Data

For hundreds of millions of years, Sex was the most efficient method for propagating information of dubious provenance: the origins of all those snippets of junk DNA are lost in the sands of reproductive history. Move aside, Sex: the world-wide Web has usurped your role. A single illegal download can propagate more parasitic bits of information than a host of mating Tse Tse flies. Indeed, as I looked further afield, I found that it was not just Wikipedia that was in error: essentially every d...