A man who is right every time is not likely to do very much.
FRANCIS CRICKA knowledge of the true age of the Earth and of the fossil record makes it impossible for any balanced intellect to believe in the literal truth of every part of the Bible in the way that fundamentalists do.
More Francis Crick Quotes
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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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In the fullness of time, educated people will believe there is no soul independent of the body, and hence no life after death.
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It would appear that the number of nonsense triplets is rather low, since we only occasionally come across them. However this conclusion is less secure than our other deductions about the general nature of the genetic code.
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Trying to determine the structure of a protein by UV spectroscopy was like trying to determine the structure of a piano by listening to the sound it made while being dropped down a flight of stairs.
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Protein synthesis is a central problem for the whole of biology, and that it is in all probability closely related to gene action.
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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 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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It is notoriously difficult to define the word living.
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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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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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You can do reverse engineering, but you can’t do reverse hacking.
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A comparison between the triplets tentatively deduced by these methods with the changes in amino acid sequence produced by mutation shows a fair measure of agreement.
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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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A final proof of our ideas can only be obtained by detailed studies on the alterations produced in the amino acid sequence of a protein by mutations of the type discussed here.
FRANCIS CRICK







