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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
refutedsupported
the weight of evidence
11 sources for · 0 against

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.

Evidence for · 11
A Comparison of Synonymous Codon Usage Bias Patterns in DNA and RNA Virus Genomes: Quantifying the Relative Importance of Mutational Pressure and Natural Selection
2013 · cited by 41
The study quantifies the contributions of both mutational pressure and natural selection in shaping codon usage patterns across viral genomes.
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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.

More for · 10
Edging on Mutational Bias, Induced Natural Selection From Host and Natural Reservoirs Predominates Codon Usage Evolution in Hantaan Virus
2021 · cited by 20
Findings demonstrate that codon usage evolution is driven by both mutational bias and host-induced natural selection.
Natural selection on gene-specific codon usage bias is common across eukaryotes
2018 · cited by 1
Research shows that natural selection is active in shaping gene-specific codon usage bias across eukaryotes, challenging neutrality.
Natural Selection Primarily Shaping Codon Usage Bias in Glycine max (soybean) WRKY Genes
2024 · cited by 0
Analysis of Glycine max WRKY genes highlights mutational pressure and natural selection as the prominent evolutionary factors of codon bias.
Variation and selection on codon usage bias across an entire subphylum.
2019 · cited by 0
The study confirms that synonymous codon usage variation is influenced by mutational bias coupled with natural selection and drift.
Evolution of Codon Usage Bias in Henipaviruses Is Governed by Natural Selection and Is Host-Specific.
2018 · cited by 0
Results indicate that codon usage patterns are shaped by a combination of mutation pressure, natural selection, and nucleotide compositions.
Natural selection plays a significant role in governing the codon usage bias in the novel SARS-CoV-2 variants of concern (VOC).
2022 · cited by 0
The analysis reveals that natural selection plays a significant role alongside compositional biases in governing codon usage in SARS-CoV-2.
Codon bias evolution in Drosophila. Population genetics of mutation-selection drift.
1997 · cited by 0
Codon bias evolution is evaluated as a balance among mutation pressure, genetic drift, and natural selection.
Codon usage bias of Venezuelan equine encephalitis virus and its host adaption.
2023 · cited by 0
Translational selection and mutation pressure are shown to jointly affect the codon usage variation of Venezuelan equine encephalitis virus.
Codon usage bias of goose circovirus and its adaptation to host.
2024 · cited by 0
The research concludes that natural selection and mutation pressure both contribute to shaping the codon usage patterns of goose circovirus.
Genomic analysis of codon usage shows influence of mutation pressure, natural selection, and host features on Senecavirus A evolution.
2017 · cited by 0
Genomic analysis of Senecavirus A shows the combined influence of mutation pressure, natural selection, and host features on codon evolution.
The paper trail · every fact has a biography
first checked04 Aug 2026
judged → SUPPORTED · 8504 Aug 2026
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