Resolving Difficult Phylogenetic Questions
Author Information
Author(s): Philippe Hervé, Brinkmann Henner, Lavrov Dennis V., Littlewood D. Timothy J., Manuel Michael, Wörheide Gert, Baurain Denis
Hypothesis
Can the addition of more genomic sequences resolve incongruences in phylogenetic studies?
Conclusion
Simply adding more sequences does not resolve inconsistencies in phylogenetic analyses.
Supporting Evidence
- Phylogenomics uses genome-scale data to infer evolutionary relationships.
- Adding more sequences can lead to increased non-phylogenetic signal.
- Conflicting gene genealogies can complicate phylogenetic analysis.
Takeaway
Scientists thought that using more DNA sequences would help them understand how different animals are related, but it turns out that just having more data isn't always better.
Methodology
The study discusses the use of phylogenomics and the challenges of reconstructing phylogenetic trees using genomic data.
Potential Biases
Potential biases arise from incorrect identification of orthologs and erroneous alignments.
Limitations
The study highlights that adding more sequences can introduce non-phylogenetic signals that complicate tree reconstruction.
Digital Object Identifier (DOI)
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