quote:
quote:
Rrhain: The point is that there are ways to achieve homochirality.
/*DNAunion*/ So show us the experiment that started with racemic mixtures of ribonucleotides and produced homochirality in polynucleotides under prebiotically plausible conditions. In principle is one thing, experimental support is another.
As with any debate with creationists, the air is filled with the creaking sounds of goal posts being moved. Look at the
original question:
quote:
The calculation implicitly relies upon homochirality. If both enantiomeric forms of the bases (actually, the sugar moieties of the bases) were present, enantiomeric cross inhibition would hinder the formation of long polymers needed for replication or other complex function.
Chirality was the question. Nothing else. None of these other objections. Rrhain answered it. It has been demonstrated that it is possible for molecules to selectively extract the correct handed molecules, indeed correct errors of chirality.
While all the points raised are valid, they are in this context irrelevant. As I read the article, the intent was to prove that molecules of the correct chirality could be selected. They did so. They have demonstrated that chiralirty need not be a problem.