(March 14, 2016 at 6:48 am)AJW333 Wrote:(March 13, 2016 at 1:22 pm)pocaracas Wrote: It's always the same with people like you... Can't understand that this planet, once, didn't have DNA around... It had something else...Seems like the theory has some significant problems,
http://www.wired.com/2013/02/proto-rna/
"Origin-of-life researchers have long thought that RNA, the molecular cousin of the DNA that encodes our genes, may have played a starring role in the initial evolution of life from a soup of organic molecules. RNA has a simpler structure than DNA and is a more adept chemical catalyst. So it would seem that RNA-based life might arise more readily than DNA-based life.
...
“The nice thing [about the current study] is this is a demonstration of self-assembly in water,” says Ramanarayanan Krishnamurthy, an origin-of-life chemist at the Scripps Research Institute in San Diego, California. “That is a step in the right direction.”
Certainly, the puzzle is not solved yet... But this research is promising results in line with the standard theory... From simple elements, molecules, some rudimentary form of genetics spontaneously appeared and then evolved to the complex DNA we see everywhere, today.
"But there are problems with this so-called RNA World hypothesis. For starters, in water, the four chemical components of RNA — the nucleotides abbreviated A, G, C, and U — don’t spontaneously assemble to create sizable molecules. So it remains a mystery how the first long gene-length chains of RNA could have taken shape in Earth’s ancient oceans..............
Unfortunately, in water CA and TAP clump together in large ribbons and sheets and quickly fall out of solution, making it hard to conceive of how these proto-RNAs could have stored genetic information in the earliest stages of life."
Why did you stop reading at that and miss the part I quoted from that article?
“The nice thing [about the current study] is this is a demonstration of self-assembly in water,”... thus providing a mechanism to skip that difficulty where you got stuck.