| 词汇 | example_english_codon-usage |
| 释义 | codon usagecollocation in Englishmeanings of codonand usageThese words are often used together. Click on the links below to explore the meanings. Or, see other collocations with usage. codon noun[C] uk /ˈkəʊ.dɒn/ us /ˈkoʊ.dɑːn/ a set of three nucleotides that together form a unit of genetic code in a DNA or ... See more at codon usage noun uk /ˈjuː.sɪdʒ/ us /ˈjuː.sɪdʒ/ the way a particular word in a language, or a language in general, ... See more at usage Examples of codon usageThese examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. For a number of organisms, evidence suggests that biased codonusage reflects the action of selection to maximize translational efficiency and accuracy. Contrary to intuition, levels of silent-site diversity can increase with the strength of selection acting on codonusage. Furthermore, simple models can be expanded to incorporate heterogeneity in the parameters determining codonusage, in order to examine how expected relationships are affected. We also examined the pattern of codonusage in the four studied species. Therefore, it seems evident that there is a large variation in codonusage among the sequences. Significance of nucleotide sequence alignments : a method for random sequence permutation that preserves dinucleotide and codonusage. The analysis of polymorphism provides a potentially powerful method for estimating the strength of selection on codonusage. According to the selective model, only synonymous sites undergoing selection on codonusage should be affected by recombination rate. Comparative analysis of expressed sequences reveals a conserved pattern of optimal codonusage in plants. These results have implications for the analysis of codonusage at greater than 2-fold degenerate amino acids. This represents codonusage for 2-fold degenerate amino acids. This new model is used to explore the relationships between synonymous codonusage, nucleotide site diversity and the rate of substitution. The rate of synonymous substitution in enterobacterial genes is inversely related to codonusage bias. Therefore, we concluded that there is a large variation in codonusage among the sequences. Maximizing transcription efficiency causes codonusage bias. However, when selection on codonusage is very weak, the effects of regional variation in recombination rate will be hard to detect (and are absent for neutral sites). Codonusage in yeast : cluster-analysis clearly differentiates highly and lowly expressed genes. Codonusage in yeast : cluster analysis clearly differentiates highly and lowly expressed genes. We can therefore expect more realistic models of codonusage to be developed, taking into account both optimal codon usage and linkage between the genome sequences. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. Want to learn more? Go to the definition of codon Go to the definition of usage See other collocations with usage |
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