the RNA world evolved into a world of RNP enzymes, such as the ribosome and ribozymes, before giving rise to the DNA, RNA and protein world of today. DNA is thought to have taken over the role of data storage due to its increased stability, while proteins, through a greater variety of monomers (amino acids), replaced RNA's role in specialized biocatalysis. The RNA world hypothesis suggests that RNA in modern cells is an evolutionary remnant of the RNA world that preceded ours.
All of this is just-so story telling, no different than Antony Flew’s hiker who made up all kinds of silly stories about a mythical gardener. In science we can’t just make up stories about an incredible, never observed, RNA world spontaneously arising, based on religious convictions that evolution must be true. And then say DNA took over this role, and proteins took over that role, due to their vastly superior capabilities.
That would be like saying that the internal combustion engine took over the role of land transportation due to its greater power and versatility, while jet engines took over the role of air transportation due to their greater thrust and reliability.
Eventually this caught up with evolutionists and now a paper is out saying that the RNA World hypothesis doesn’t work. A key molecular machine in the RNA World hypothesis is the ribosome. Not only does it construct proteins, a key function, but it is comprised of both proteins and RNA.
The new paper shows that (if evolution is true) early versions of the ribosome must have included the protein parts. Right there you have a flaw in the RNA World hypothesis. Beyond that, the research suggests that RNA alone cannot construct proteins. As the author explained:
I’m convinced that the RNA world (hypothesis) is not correct. That world of nucleic acids could not have existed if not tethered to proteins. … It appears the basic building blocks of the machinery of the cell have always been the same from the beginning of life to the present: evolving and interacting proteins and RNA molecules.
But the problems don’t stop there. For the results indicate that if evolution is true, then proteins predate the machinery to construct them. Again, evolution makes no sense on these findings. Here is how Russell Doolittle, one of the leading researchers in this area, responded:
“This is a very engaging and provocative article by one of the most innovative and productive researchers in the field of protein evolution,” said University of California at San Diego research professor Russell Doolittle, who was not involved in the study. Doolittle remains puzzled, however, by “the notion that some early proteins were made before the evolution of the ribosome as a protein-manufacturing system.” He wondered how—if proteins were more ancient than the ribosomal machinery that today produces most of them—“the amino acid sequences of those early proteins were ‘remembered’ and incorporated into the new system.”
Ah, yes, that’s a problem alright. Not to worry though, for there is always that next just-so story to save the day. In this case, the evolutionist explains that:
It is therefore likely that the ribosomes were not the first biological machines to synthesize proteins.
There you have it. There was some other fantastic machine, never observed of course, that created proteins before the ribosome came around. Unbelievable. Antony Flew is outdone.
Religion drives science, and it matters.