The main theories which have been suggested to explain the origin of genetic code organization are discussed. The coevolution theory, which considers the genetic code as a map of the biosynthetic relationships between amino acids, seems to be based on a mechanism that links it closely to certain sta
A statistical test of hypotheses on the organization and origin of the genetic code
✍ Scribed by Eörs Szathmáry; Elias Zintzaras
- Publisher
- Springer
- Year
- 1992
- Tongue
- English
- Weight
- 375 KB
- Volume
- 35
- Category
- Article
- ISSN
- 0022-2844
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✦ Synopsis
Theories of the origin of the genetic code assign different weights to amino acid propel-ties such as polarity and precursor-product relationship. Previous statistical work on the origin of the genetic code has produced controversial results. We analyze relationships between various amino acid and tRNA properties by one and the same statistical method. It is shown that polarities as well as precursor-product relationships are both likely to have been important in shaping the genetic code, together with codon swapping that left protein sequences intact.
📜 SIMILAR VOLUMES
Two ideas have essentially been used to explain the origin of the genetic code: Crick's frozen accident and Woese's amino acid-codon specific chemical interaction. Whatever the origin and codon-amino acid correlation, it is difficult to imagine the sudden appearance of the genetic code in its presen