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the claim
Codons are distributed unevenly across DNA sequences due to mutational biases and selection.
the verdict
SUPPORTED
the evidence backs this
Recorded sources
11 sources for · 0 against
Is it true that codons are distributed unevenly across DNA sequences due to mutational biases and selection?
Yes. Codon usage bias across DNA and RNA sequences is widely documented to be driven by an interplay of mutational biases, genetic drift, and natural selection.
Verdict: SUPPORTED · 11 sources for, 0 against · Last checked
The analysis
The retrieved papers consistently report that codon usage bias is shaped by evolutionary forces, primarily mutational biases and natural selection, thereby supporting the claim.
Evidence for · 11
The study quantifies the contributions of both mutational pressure and natural selection in shaping codon usage patterns across viral genomes.
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Chen, Y. (2013). A Comparison of Synonymous Codon Usage Bias Patterns in DNA and RNA Virus Genomes: Quantifying the Relative Importance of Mutational Pressure and Natural Selection. doi.org. https://doi.org/10.1155/2013/406342
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More for · 10
Findings demonstrate that codon usage evolution is driven by both mutational bias and host-induced natural selection.
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Ata, G., Wang, H., Bai, H., Yao, X., & Tao, S. (2021). Edging on Mutational Bias, Induced Natural Selection From Host and Natural Reservoirs Predominates Codon Usage Evolution in Hantaan Virus. doi.org. https://doi.org/10.3389/fmicb.2021.699788
Research shows that natural selection is active in shaping gene-specific codon usage bias across eukaryotes, challenging neutrality.
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Peng, Z., Zaher, H., & Ben-Shahar, Y. (2018). Natural selection on gene-specific codon usage bias is common across eukaryotes. doi.org. https://doi.org/10.1101/292938
Analysis of Glycine max WRKY genes highlights mutational pressure and natural selection as the prominent evolutionary factors of codon bias.
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Sinha, K., Jana, S., Pramanik, P., & Bera, B. (2024). Natural Selection Primarily Shaping Codon Usage Bias in Glycine max (soybean) WRKY Genes. doi.org. https://doi.org/10.21203/rs.3.rs-4429582/v1
The study confirms that synonymous codon usage variation is influenced by mutational bias coupled with natural selection and drift.
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LaBella, A. L., Opulente, D. A., Steenwyk, J. L., Hittinger, C. T., & Rokas, A. (2019). Variation and selection on codon usage bias across an entire subphylum.. doi.org. https://doi.org/10.1371/journal.pgen.1008304
Results indicate that codon usage patterns are shaped by a combination of mutation pressure, natural selection, and nucleotide compositions.
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Kumar, N., Kulkarni, D. D., Lee, B., Kaushik, R., Bhatia, S., Sood, R., Pateriya, A. K., Bhat, S., & Singh, V. P. (2018). Evolution of Codon Usage Bias in Henipaviruses Is Governed by Natural Selection and Is Host-Specific.. doi.org. https://doi.org/10.3390/v10110604
The analysis reveals that natural selection plays a significant role alongside compositional biases in governing codon usage in SARS-CoV-2.
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Tyagi, N., Sardar, R., & Gupta, D. (2022). Natural selection plays a significant role in governing the codon usage bias in the novel SARS-CoV-2 variants of concern (VOC).. doi.org. https://doi.org/10.7717/peerj.13562
Codon bias evolution is evaluated as a balance among mutation pressure, genetic drift, and natural selection.
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Akashi, H. (1997). Codon bias evolution in Drosophila. Population genetics of mutation-selection drift.. doi.org. https://doi.org/10.1016/s0378-1119(97)00400-9
Translational selection and mutation pressure are shown to jointly affect the codon usage variation of Venezuelan equine encephalitis virus.
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Wang, H., Liu, S., Lv, Y., & Wei, W. (2023). Codon usage bias of Venezuelan equine encephalitis virus and its host adaption.. doi.org. https://doi.org/10.1016/j.virusres.2023.199081
The research concludes that natural selection and mutation pressure both contribute to shaping the codon usage patterns of goose circovirus.
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Xu, Q., Cao, J., Rai, K. R., Zhu, B., Liu, D., & Wan, C. (2024). Codon usage bias of goose circovirus and its adaptation to host.. doi.org. https://doi.org/10.1016/j.psj.2024.103775
Genomic analysis of Senecavirus A shows the combined influence of mutation pressure, natural selection, and host features on codon evolution.
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Chen, Y., Xu, Q., Tan, C., Li, X., Chi, X., Cai, B., Yu, Z., Ma, Y., & Chen, J. (2017). Genomic analysis of codon usage shows influence of mutation pressure, natural selection, and host features on Senecavirus A evolution.. doi.org. https://doi.org/10.1016/j.micpath.2017.09.040
What does the evidence say?
The retrieved papers consistently report that codon usage bias is shaped by evolutionary forces, primarily mutational biases and natural selection, thereby supporting the claim.
Receipt History
first checked04 Aug 2026
judged → SUPPORTED · 8504 Aug 2026
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