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Different Rates of Mitochondrial DNA Sequence Evolution in Kirkā²s Dik-dik (Madoqua-kirkii) Populations
- Source :
- Molecular Phylogenetics and Evolution. 4:291-297
- Publication Year :
- 1995
- Publisher :
- Elsevier BV, 1995.
-
Abstract
- We have investigated evolutionary rates of the mitochondrial genome among individuals of Madoqua kirkii using the relative rate test. Our results demonstrate that individuals of two chromosome races, East African cytotype A and Southwest African cytotype D, evolve about 2.3 times faster than East African cytotype B. Cytogenetic changes, DNA repair efficiency, mutagens, and more likely, hitherto unrecognized factors will account for the rate difference we have observed. Our results suggest additional caution when using molecular clocks in the estimation of divergence time, even within lineages of closely related taxa. Rate heterogeneity in microevolutionary timescales represents a potentially important aspect of basic evolutionary processes and may provide additional insights into factors which affect genome evolution.
- Subjects :
- Genome evolution
Mitochondrial DNA
Biology
DNA, Mitochondrial
RNA, Transfer, Phe
Phylogenetics
Genetic variation
Genetics
Animals
Molecular clock
Molecular Biology
Phylogeny
Ecology, Evolution, Behavior and Systematics
RNA, Transfer, Thr
Base Composition
Models, Statistical
Models, Genetic
Genetic Variation
Chromosome
Cytochrome b Group
biology.organism_classification
Biological Evolution
Relative rate test
Madoqua kirkii
Antelopes
Evolutionary biology
Mathematics
Subjects
Details
- ISSN :
- 10557903
- Volume :
- 4
- Database :
- OpenAIRE
- Journal :
- Molecular Phylogenetics and Evolution
- Accession number :
- edsair.doi.dedup.....d206c67c5986e6fe497e9c86e0df77af