Early Evolution
Studies of retroviruses led to the first demonstrated synthesis of DNA from RNA templates, a fundamental mode for transferring genetic material that occurs in both eukaryotes and prokaryotes. It has been speculated that the RNA to DNA transcription processes used by retroviruses may have first caused DNA to be used as genetic material. In this model, the RNA world hypothesis, cellular organisms adopted the more chemically stable DNA when retroviruses evolved to create DNA from the RNA templates.
Read more about this topic: Retrovirus
Famous quotes containing the words early and/or evolution:
“To be candid, in Middlemarch phraseology, meant, to use an early opportunity of letting your friends know that you did not take a cheerful view of their capacity, their conduct, or their position; and a robust candour never waited to be asked for its opinion.”
—George Eliot [Mary Ann (or Marian)
“By contrast with history, evolution is an unconscious process. Another, and perhaps a better way of putting it would be to say that evolution is a natural process, history a human one.... Insofar as we treat man as a part of nature—for instance in a biological survey of evolution—we are precisely not treating him as a historical being. As a historically developing being, he is set over against nature, both as a knower and as a doer.”
—Owen Barfield (b. 1898)