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Molecular phylogeny of the carnivora (mammalia): assessing the impact of increased sampling on resolving enigmatic relationships.
This study analyzed 76 species of Carnivora using a concatenated sequence of 6243 bp from six genes, representing the most comprehensive sampling yet undertaken for reconstructing the phylogeny of this clade.
Single origin of Malagasy Carnivora from an African ancestor
A multi-gene phylogenetic analysis is used to show that Malagasy carnivorans are monophyletic and thus the product of a single colonization of Madagascar by an African ancestor, and that a single event cannot explain the presence of both groups in Madagascar.
Gene trees and hominoid phylogeny.
- M. Ruvolo, D. Pan, S. Zehr, T. Goldberg, T. Disotell, M. von Dornum
- BiologyProceedings of the National Academy of Sciences…
- 13 September 1994
The results indicate that despite high intraspecific variation in mitochondrial cytochrome oxidase subunit II gene sequences of some hominoids, humans and chimpanzees are nonetheless significantly most closely related.
Comparative RNA sequencing reveals substantial genetic variation in endangered primates.
This study sequencing RNA from the livers of multiple individuals from each of 16 mammalian species, including humans and 11 nonhuman primates, identified patterns of variation that are consistent with the action of positive or directional selection, and found no relationship between genetic diversity and endangered status.
Unresolved molecular phylogenies of gibbons and siamangs (Family: Hylobatidae) based on mitochondrial, Y-linked, and X-linked loci indicate a rapid Miocene radiation or sudden vicariance event.
Mitochondrial COII sequences and modern human origins.
- M. Ruvolo, S. Zehr, M. von Dornum, D. Pan, B. Chang, J. Lin
- BiologyMolecular biology and evolution
- 1 November 1993
The mitochondrial DNA sequence data from COII and ND4-5 regions therefore do not support this multiregional hypothesis for the emergence of modern humans and are compatible with a 1-Myr-old human mitochondrial ancestor.
Life history profiles for 27 strepsirrhine primate taxa generated using captive data from the Duke Lemur Center
- S. Zehr, Richard G Roach, D. Haring, J. Taylor, F. H. Cameron, A. Yoder
- Environmental ScienceScientific data
- 22 July 2014
Verified data for 3,627 individuals of 27 taxa in the form of a life history table containing summarized species values for variables relating to ancestry, reproduction, longevity, and body mass are presented.
Tempo and mode of evolution in an orthologous Can SINE
Results indicate that differences between the two partitions may be the result of homoplasy introduced by an increased substitution rate in the tRNA-related region of Can SINE owing to CpG hypermutability.
A nuclear and mitochondrial phylogeny of the lesser apes (primates, genus Hylobates)
- S. Zehr
The U.S. Culture Collection Network Lays the Foundation for Progress in Preservation of Valuable Microbial Resources.
The U.S. Culture Collection Network held a meeting in October 2015 to discuss collections that are vulnerable because of changes in funding programs, or are at risk of loss because of retirement or lack of funding.