Evolutionary Relationships of Voles and Lemmings
Author Information
Author(s): Galewski Thomas, Tilak Marie-ka, Sanchez Sophie, Chevret Pascale, Paradis Emmanuel, Douzery Emmanuel JP
Primary Institution: Institut des Sciences de l'Evolution UMR 5554/CNRS, Université Montpellier II
Hypothesis
How do nuclear and mitochondrial DNA contribute to understanding the phylogenetic relationships among Arvicolinae rodents?
Conclusion
Nuclear DNA, specifically the GHR gene, provides a clearer resolution of the evolutionary relationships among voles and lemmings compared to mitochondrial DNA.
Supporting Evidence
- The GHR sequences provided more resolved phylogenies than CYB sequences.
- Significant increases in resolution were observed when combining nuclear and mitochondrial data.
- Nuclear genes are less affected by saturation compared to mitochondrial genes.
Takeaway
Scientists studied the DNA of voles and lemmings to see how they are related, finding that one type of DNA gives better answers than the other.
Methodology
The study compared sequences from the growth hormone receptor gene (GHR) and cytochrome b gene (CYB) to infer phylogenetic relationships.
Potential Biases
Potential biases may arise from using only one type of nuclear gene for phylogenetic inference.
Limitations
The study is based on a single nuclear locus and may not fully represent the organismal history of arvicoline rodents.
Participant Demographics
The study included 25 species of Arvicolinae rodents representing 14 genera.
Statistical Information
P-Value
p<0.05
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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