Again the message to experimentalists is: Be sensible but don’t be impressed too much by negative arguments. If at all possible, try it and see what turns up. Theorists almost always dislike this sort of approach.
FRANCIS CRICKA man who is right every time is not likely to do very much.
More Francis Crick Quotes
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It has not escaped our notice that the specific pairing we have postulated immediately suggests a possible copying mechanism for the genetic material.
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Exploratory research is really like working in a fog. You don’t know where you’re going. You’re just groping. Then people learn about it afterwards and think how straightforward it was.
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In my experience most mathematicians are intellectually lazy and especially dislike reading experimental papers. He seemed to have very strong biological intuitions but unfortunately of negative sign.
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Christianity may be OK between consenting adults in private but should not be taught to young children.
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It is one of the more striking generalizations of biochemistry – which surprisingly is hardly ever mentioned in the biochemical textbooks – that the twenty amino acids and the four bases, are, with minor reservations, the same throughout Nature.
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For simplicity one can think of the + class as having one extra base at some point or other in the genetic message and the – class as having one too few.
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It now seems very likely that many of the 64 triplets, possibly most of them, may code one amino acid or another, and that in general several distinct triplets may code one amino acid.
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If the code does indeed have some logical foundation then it is legitimate to consider all the evidence, both good and bad, in any attempt to deduce it.
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There is no scientific study more vital to man than the study of his own brain. Our entire view of the universe depends on it.
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It seems likely that most if not all the genetic information in any organism is carried by nucleic acid – usually by DNA, although certain small viruses use RNA as their genetic material.
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The balance of evidence both from the cell-free system and from the study of mutation, suggests that this does not occur at random, and that triplets coding the same amino acid may well be rather similar.
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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.
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Rather than believe that Watson and Crick made the DNA structure, I would rather stress that the structure made Watson and Crick.
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Exact knowledge is the enemy of vitalism.
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It is not easy to convey, unless one has experienced it, the dramatic feeling of sudden enlightenment that floods the mind when the right idea finally clinches into place.
FRANCIS CRICK