Mitochondrial DNA clones and matriarchal phylogeny within and among geographic populations of the pocket gopher, Geomys pinetis.
AUTOR(ES)
Avise, J C
RESUMO
Restriction endonuclease assay of mitochondria DNA (mtDNA) and standard starch-gel electrophoresis of proteins encoded by nuclear genes have been used to analyze phylogenetic relatedness among a large number of pocket gophers (Geomys pinetis) collected throughout the range of the species. The restriction analysis clearly distinguishes two populations within the species, an eastern and a western form, which differ by at least 3% in mtDNA sequence. Qualitative comparisons of the restriction phenotypes can also be used to identify mtDNA "clones" within each form. The mtDNA clones interconnect in a phylogenetic network which represents an estimate of matriarchal phylogeny for G. pinetis. Although the protein electrophoretic data also differentiate the eastern and western forms, the data are of limited usefulness in establishing relationships among more local subpopulations. The comparison between these two data sets suggests that restriction analysis of mtDNA is probably unequalled by other techniques currently available for determining phylogenetic relationships among conspecific organisms.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=411935Documentos Relacionados
- Extensive variation and heteroplasmy in size of mitochondrial DNA among geographic populations of Drosophila melanogaster
- Large sequence divergence among mitochondrial DNA genotypes within populations of eastern African black-backed jackals.
- A Comprehensive Study of Genic Variation in Natural Populations of Drosophila Melanogaster. IV. Mitochondrial DNA Variation and the Role of History Vs. Selection in the Genetic Structure of Geographic Populations
- Phylogeny of the Serrasalmidae (Characiformes) based on mitochondrial DNA sequences
- Estimates of Gene Flow among Populations, Geographic Races, and Species in the Ipomopsis Aggregata Complex