Goal seeking is only a metaphor but works perfectly well describing so many chemical reactions dosnt it? Things do tend to fall into place after they start to cool down so predictably, dont they? There is goal seeking, just ask those little oxygen atoms which just love filling those last two electron slots in the outer shell (fire, rust & explosions) Or carbon atoms with 4 slots empty which can accept electrons from other atoms to form super long chains, the basis for organic life itself, on and on.
Things also come together when super heated under pressure in the interior fusion shells of stars, and much later when they implode & explode forming all those heavier elements past iron. DNA is only four, count them four atoms , four elements, grouped into four different nucleotides. However improbable this chemical evolution seems , given the right conditions ends up making perfect sense alongside all the latest data & ifnormation on molecular evolution.
From the big bang to bacteria & algae to you, BOO!
DNA is a nucleic acid, which is the part of the cell that contains molecules that store information. DNA is made of a pattern of four different nucleotides, which are bound on one end to a phosphate group and on the other to a nitrogenous base. The nitrogenous base can be one of four types: adenine, cytosine, guanine or thymine. The nucleotides are joined in long strings to make up DNA and these two strands twist together to create DNA's characteristic double helix. Each strand has the sugar or phosphate end of the nucleotides. The sides are joined together by pairs of complementary nucleotides. |
