156 results match your criteria: "Museum Support Center[Affiliation]"
Syst Biol
August 2001
Laboratory of Molecular Systematics, National Museum of Natural History, Smithsonian Institution Museum Support Center, 4210 Silver Hill Road, Suitland, Maryland 20746, USA.
Syst Biol
September 1998
Laboratory of Molecular Systematics, Smithsonian Museum Support Center, 4210 Silver Hill Road, Suitland, Maryland 20746, USA.
Syst Biol
September 1997
Laboratory of Molecular Systematics, Smithsonian Museum Support Center, 4210 Silver Hill Road, Suitland, Maryland 20746, USA.
Mice of the Peromyscus aztecus species group occur at mid to high elevations in several mountain ranges in the highlands of Middle America (Mexico and Central America), a region of high endemicity. We examined the biogeography of this group by conducting phylogenetic analyses of 668 bp of the mitochondrial cytochrome b (cyt b) gene. Phylogenetic analyses under both parsimony and likelihood frameworks produced the same topologies, but estimates of nodal support were artificially high in weighted parsimony analyses.
View Article and Find Full Text PDFJ Hum Evol
November 1999
Smithson Light Isotope Laboratory, Museum Support Center, Smithsonian Institution, Washington, DC 20560-0534, USA.
Stable carbon and oxygen isotope values from soil carbonates were used to determine the vegetation context of archaeological sites and local climatic conditions represented in a approximately 0.99 Ma paleosol that is exposed laterally in the Olorgesailie basin, southern Kenya rift valley. As part of this landscape-scale project, samples of an upper Member 1 paleosol were analyzed along nearly 4 km of outcrop in three adjacent parts of the basin.
View Article and Find Full Text PDFJ Am Mosq Control Assoc
June 1999
Walter Reed Biosystematics Unit, Museum Support Center, Smithsonian Institution, Washington, DC 20560, USA.
Aedes (Finlaya) japonicus japonicus is recorded for the 1st time in the United States. Four adult females were collected in light traps at 2 sites in New York and one site in New Jersey during the months of August and September 1998. Notes on bionomics are provided.
View Article and Find Full Text PDFJ Mol Evol
January 1999
Laboratory of Molecular Systematics, Smithsonian Museum Support Center, 4210 Silver Hill Road, Suitland, MD 20746, USA.
A model of nucleotide substitution that allows the transition/transversion rate bias to vary across sites was constructed. We examined the fit of this model using likelihood-ratio tests by analyzing 13 protein coding genes and 1 pseudogene. Likelihood-ratio testing indicated that a model that allows variation in the transition/transversion rate bias across sites provided a significant improvement in fit for most protein coding genes but not for the pseudogene.
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