Looking for something to rock your central dogma? How about RNA, DNA…TNA?

When I first read this I thought that it was simply written by a mistaken undergrad student. Alas, it is not!

In the chemistry of the living world, a pair of nucleic acids—DNA and RNA—reign supreme. As carrier molecules of the genetic code, they provide all organisms with a mechanism for faithfully reproducing themselves as well as generating the myriad proteins vital to living systems.

Yet according to John Chaput, a researcher at the Center for Evolutionary Medicine and Informatics, at Arizona State University’s Biodesign Institute®, it may not always have been so.

Click here to read the whole story.

Below is a PBS video of Dr. Chaput’s research from several years ago:

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