A new hypothesis of the origin of life on Earth

There is the idea that the common ancestor. archaea. ,. eukaryotes. and. bacteria. was a large creature that fills almost the entire ocean praistorechesky.

Origin of Life. on the planet - a topic that has always been a subject of controversy for many scientists. Nowadays there are many hypotheses, ostensibly giving us the answer to this question. But to give an exact answer about the reasons for. emergence of life on Earth. Probably no one can, at least until such time as not invent a time machine. Of course, the time machine - it's just a fantasy and the dream of many scientists, but so far it does not, have to rely on molecular genetic evidence, which make it possible to recover at least some. genealogy of life. for some mysterious ancestors.

Scientists from the University of Illinois have found a radical solution to this problem. They argue that all life on our planet comes from a common ancestor. According to them it is from this ancestor life was divided into three branches - archaea, bacteria and eukaryotes. The researchers believe that this ancestor lived about three billion. years ago.

Dr. Caetano - Anoles, head of the research team, has to say about this ancestor in the singular. Scientists believe that this was just a giant body size, which allowed him to occupy almost the whole. biosphere. It is assumed that the body of this ancestor was submerged in the ocean, with numerous cells belonging to different types of tissues, has never competed with each other, but on the contrary, in a state of mutual. This balance, according to scientists, there was a certain point, when the parent body under the influence of certain conditions is divided into three parts, of which there were bacteria, archaea and eukaryotes. Then, after awhile, the last divided into plants and animals.

It should be noted that this hypothesis quickly gained no small number of supporters, and some geneticists have begun to look for evidence of. And they're going to do this by searching. total proteins. That could confirm the identity of all three branches of a single organism.

But on the other hand,. hypothesis. has features that were the subject of controversy even among its supporters. There were doubts that the ancestor was a multicellular organism. In addition, some researchers suggest that the carrier. genetic information. was not. DNA. and. RNA.