Results 211 to 220 of about 251,771 (264)

Comparative plastome analyses and evolutionary relationships of 25 East Asian species within the medicinal plant genus Scrophularia (Scrophulariaceae). [PDF]

Front Plant Sci
Wang X, Guo L, Ding L, Medina L, Wang R, Li P.   +5 more
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Evolutionary relationships of eukaryotic kingdoms

Journal of Molecular Evolution, 1996
The evolutionary relationships of four eukaryotic kingdoms--Animalia, Plantae, Fungi, and Protista--remain unclear. In particular, statistical support for the closeness of animals to fungi rather than to plants is lacking, and a preferred branching order of these and other eukaryotic lineages is still controversial even though molecular sequences from ...
S, Kumar, A, Rzhetsky
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Spiroplasmas: evolutionary relationships and biodiversity

Frontiers in Bioscience, 2006
Spiroplasmas are wall-less descendants of Gram-positive bacteria that maintain some of the smallest genomes known for self-replicating organisms. These helical, motile prokaryotes exploit numerous habitats, but are most often found in association with insects.
Laura B, Regassa, Gail E, Gasparich
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Evolutionary relationships among the serpins

Philosophical Transactions of the Royal Society of London. Series B: Biological Sciences, 1993
The serpins are a widely distributed group of serine proteinase inhibitors found in plants, birds, mammals and viruses. Despite the great evolutionary divergence of these organisms, their serpins art highly conserved, both in sequence and structurally.
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Introduction to Inferring Evolutionary Relationships

Current Protocols in Bioinformatics, 2003
AbstractThis unit provides a general introduction to phylogeny. It defines common terms and discusses the issue of rooting trees, in addition to comparing gene and species trees. Methods for inferring phylogenies, such as distance methods, parsimony methods, and maximum likelihood are also presented.
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Stegodontidae: evolutionary relationships

1996
Abstract The family Stegodontidae is composed of the two genera, Stegolophodon and Stegodon. This family first appeared in Asia during the early Miocene and became one of the dominant faunas of Asia during the Pliocene and Pleistocene. Because of elephant-like similarities, the systematic position of the stegodontids has developed with ...
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Evolutionary relationships among photosynthetic bacteria

Photosynthesis Research, 2003
To understand the evolution of photosynthetic bacteria it is necessary to understand how the main groups within Bacteria have evolved from a common ancestor, a critical issue that has not been resolved in the past. Recent analysis of shared conserved inserts or deletions (indels) in protein sequences has provided a powerful means to resolve this long ...
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Glucoamylase structural, functional, and evolutionary relationships

Proteins: Structure, Function, and Genetics, 1997
To correlate structural features with glucoamylase properties, a structure-based multisequence alignment was constructed using information from catalytic and starch-binding domain models. The catalytic domain is composed of three hydrophobic folding units, the most labile and least hydrophobic of them being missing in the most stable glucoamylase.
P M, Coutinho, P J, Reilly
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Origins and Evolutionary Relationships of Retroviruses

The Quarterly Review of Biology, 1989
As is the case for some other RNA viruses, the amino acid sequences of retroviral proteins change at an astonishing rate. For example, the proteases of the human immunodeficiency virus (HIV) and the visna lentivirus with which it is often compared are as different as the proteases of fungi and mammals, and those of the human type I leukemia virus are ...
R F, Doolittle, D F, Feng, M S, Johnson, M A, McClure   +3 more
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Evolutionary relationships among early hominids

Journal of Human Evolution, 1992
Although cladistic analysis provides one of the most useful approaches to discovering the phyletic relatiosships among the species of Australopithecus and early Homo, methodological problems continue to beset any attempt to apply it in this context. Two of the most pressing problems are redundancy of traits due to similarity of underlying function and ...
Randall R. Skelton, Henry M. McHenry
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