It has yet to be shown by direct biochemical methods, as opposed to the indirect genetic evidence mentioned earlier, that the code is indeed a triplet code.

Evolution is cleverer than you are.

Unfortunately it makes the unambiguous determination of triplets by these methods much more difficult than would be the case if there were only one triplet for each amino acid.

If poly A is added to poly U, to form a double or triple helix, the combination is inactive.

Rather than believe that Watson and Crick made the DNA structure, I would rather stress that the structure made Watson and Crick.

We are sometimes asked what the result would be if we put four +'s in one gene. To answer this my colleagues have recently put together not merely four but six +'s.

It is essential to understand our brains in some detail if we are to assess correctly our place in this vast and complicated universe we see all around us.