News & Events
DNA and RNA could appear almost simultaneously on Earth
- April 8, 2019
- Posted by: Wiley M. Wagner
- Category: Science
DNA and RNA are basic genetic compounds that unite absolutely any cellular organisms on Earth — however, today a team of talented evolutionary biologists from the Scripps Research Institute presented their new research in this regard, hypothetically finding that DNA and RNA could have been formed in living organisms almost simultaneously, and not separately, as is commonly believed in scientific circles at the moment. The study itself focuses not only on this relationship, but also covers many other aspects regarding the emergence and development of intelligent life on our planet.
But it is worthwhile, in particular, to dwell on the question of the relationship between DNA and RNA. Scientists under the guidance of professor of bio-engineering and evolutionary biology Ramanarayan Krishnamurti established by experience that RNA, despite its flexibility and more primitive functional type in comparison with DNA, still appeared almost simultaneously with DNA – scientists prove this by pointing to the interaction between them is a special enzyme and chemical compound that served as a kind of binder and at the same time chemical forerunner of the occurrence of multicellular living organisms.
This compound is thiuridine. Scientists believe that thiuridine was present in a fairly large and diverse amount about four billion years ago when the first multicellular organisms began to develop, but at the same time indicate that under laboratory conditions they do not always manage to use this compound to convert part of the genetic information from RNA in DNA.
Which in turn can mean two possible options – either another compound takes place in this complex and multi-step chemical process, or scientists miss a step in the previous theoretical study. In any case, the proposal of such a new and unusual concept that RNA and DNA emerged almost simultaneously will surely force many specialists in the field of evolutionary biology to reconsider the methods and approaches to their research.