It seems virtually certain that a single chain of RNA can act as messenger RNA, since poly U is a single chain without secondary structure.
More Quotes from Francis Crick:
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
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.
Francis Crick
The genetic code describes the way in which a sequence of twenty or more things is determined by a sequence of four things of a different type.
Francis Crick
If, for example, all the codons are triplets, then in addition to the correct reading of the message, there are two incorrect readings which we shall obtain if we do not start the grouping into sets of three at the right place.
Francis Crick
We've discovered the secret of life.
Francis Crick
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.
Francis Crick
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