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It is interesting that the U.S. has this very strong proportion of the population that rejects scientific conclusions about the age of the Earth and about evolutionary relationships between species, including humans.
The word "live" has so many connotations that I am almost reluctant to try to define it scientifically, because it seems that I then degrade all the other meanings of this word.
This is one of the most striking generalizations of biochemistry which is surprisingly almost never mentioned in biochemistry textbooks that the twenty amino acids and four bases are, with small reserves, the same throughout the world. Nature.
The meaning of this observation is unclear, but it raises the unfortunate possibility of ambiguous triplets; i.e., triplets that can encode more than one amino acid. However, we would certainly expect these triplets to be in the minority.
A study of the modifications produced by the mutation has made it possible to obtain the relative order of the bases within various triplets, but I consider that they are premature until there is more complete and more reliable data. on the composition of triplets.
A comparison between the triplets provisionally deduced by these methods and the amino acid sequence changes produced by mutation shows a good measure of agreement.
It now seems certain that the amino acid sequence of any protein is determined by the base sequence in a region of a particular nucleic acid molecule.
In addition, the incorporation requires the same components as protein synthesis and is inhibited by the same inhibitors. It is therefore very unlikely that the system is a complete artifact and is most likely closely related to authentic protein synthesis.
One last proof of our ideas can be obtained only by detailed studies on the alterations produced in the amino acid sequence of a protein by mutations of the type discussed here.
It has not yet been demonstrated by direct biochemical methods, unlike the indirect genetic evidence mentioned above, that the code is a triplet code.
The evidence balance of the acellular system and the mutation study suggests that this does not happen at random and that triplets encoding the same amino acid may be quite similar.
For simplicity, we can think that the class + has an additional base at a given moment of the genetic message and that the class has too little.
If, for example, all the codons are triplets, then in addition to the correct reading of the message, there are two incorrect reads that we will get if we do not start grouping into sets of three in the right place.
It seems that the number of triplets nonsense is rather low, because we meet them only occasionally. However, this conclusion is less certain than our other inferences about the general nature of the genetic code.
This seems very likely, especially since it has been shown that, in several systems, mutations affecting the same amino acid are extremely close on the genetic map.
It seems likely that most, if not all, genetic information of an organism is transmitted by nucleic acid usually DNA, although some small viruses use RNA as genetic material.