I don't get it. Water has 2 hydrogen atoms and one oxygen atom.
How does this work if it isn't the hydrogen?
Classic pictures of DNA, still in most textbooks, show naked DNA double helix with hydrogen bonding between base pairs. This is over simplified and leads to oversimplified conclusions. There is also a double helix of water woven into the DNA double helix. The water in the double helix of water, is hydrogen bonded to other water, and to the DNA; surface tension, exerting hydrophobic forces, that make the classic hydrogen bonding between the base pairs more efficient, which is key to a good template. Adding the water made the template even better.
When an enzyme complex comes to the DNA, water is also exerting a hydrophobic pressure of the DNA and enzyme causing the enzyme to bead up onto the DNA; stacking. Through similar hydrophobic forces, this also allows the template hydrogen bonding to become more precise.
If you compare the old DNA diagram to the newer diagram of DNA with water, and allow students to see both side by side, they will ask different questions and receive different answers for each diagram. If we leave out the water, as shown in most textbooks, there is some unknown gap between theory and the experimental behavior, that now requires statistical methods to model. If we add the water much of that gap is accounted for. This opens a door to rational models without the pitfalls of casino science.
A problem that has slowed change is connected to statistical modeling, which may become semi-obsolete, but which is used throughout the bio-industry. It appears easier to suppress the new, then evolve away from that old trusty tool. This wall has been there since the 1950's; important water science discoveries.
The water in the DNA also changes the mechanisms for evolution. Science does not yet allow one to think outside the box of the old science, in public. I have been extrapolating for years and science does not wish to upgrade. Most of it is because nobody has been exposed to the new diagrams, from above, so it was assumed to be alternate theory instead of better science.
The classic way was useful and was the proper path to take, originally. The organics are large and could be investigated easier with 1950's tools and then fudged with math models. Water molecules are tiny by comparison. The water side needed advances in technology and methods. What was postulated decades ago is now visible by experiments.
Water is the most studied material in all of science. There are more papers on water that any thing other single topic in science. It has been studied so much because it is the moat anomalous substance in the universe with 41 known anomalies. These anomalies are where water behaves differently that the trends found in most materials. Water is the Swiss army knife of nature. Water expands when it freezes which is onl one by 1-2 other substances.
The easiest way is to think in terms of the co-partnership between water and the organics of life is the simple system of water and oil, or vinegar and olive oil, used for salads. These system have two opposites, who like to separate out from each other; order from chaos. It is not about chance meetings, but two mutual opposites going in different directions, with the majority component of water leading to organic efficiency. Water is the environment for chemical selection at the nanoscale. Water micromanages and has its finger in every pie.