Although there are striking differences between the cells that make up your eyes, kidneys, brain and toes, the DNA blueprint ...
If you thought that the RNA world hypothesis had comfortably eclipsed the DNA world hypothesis, think again. As far as molecular biologists at the MRC Laboratory are concerned, the two hypotheses are ...
Scientists for the first time have found strong evidence that RNA and DNA could have arisen from the same set of precursor molecules even before life evolved on Earth about four billion years ago.
Key building blocks of DNA and RNA can be made from the same raw materials. This finding suggests that instead of one or the other kick-starting life on Earth, both chemicals were involved in the ...