Now showing items 31-40 of 138
Introduction: A tribute to David L. Nanney, an experimental ciliatologist
(Wiley Subscription Services, Inc., A Wiley Company, 1992)
No Abstract.
The effect of past experience on the size of shells selected by hermit crabs
(Elsevier, 1992-08)
The relationship between crab size and shell size selected, in a free-choice situation, was tested for crabs maintained under several conditions. Individuals of Calcinus tibicen that were held and presented with an excess ...
A mouse Y Chromosome pseudogene is related to human ubiquitin activating enzyme E1
(Springer-Verlag, 1992-01)
A 2041 bp DNA fragment isolated from the Sxr (sex reversed) region of the mouse Y Chromosome (Chr) was sequenced and characterized. The sequence, pY8/b, contains four exons that are highly similar to 525 contiguous bases ...
Temporal pattern of foraging and microhabitat use by Galápagos marine iguanas, Amblyrhynchus cristatus
(Springer-Verlag, 1993-10)
We observed a colony of marine iguanas ( Amblyrhynchus cristatus ) on Isla Fernandina, Galápagos, Ecuador, while measuring local micrometeorological and tidal conditions. We found size-related differences in foraging mode, ...
Brain structure localization in positron emission tomography: Comparison of magnetic resonance imaging and a stereotactic method
(Elsevier, 1991)
A method commonly used for localization of brain regions on positron emission tomographic (PET) images is direct visualization and designation of structure on the image itself. This technique, however, is limited to portions ...
Evidence for Multiple Functional Copies of the Male Sex-Determining Locus, Sry, in African Murine Rodents
(Springer-Verlag; Springer-Verlag New York Inc., 1997-07)
Southern hybridization data suggest that the male sex-determining locus, Sry, is often duplicated in rodents. Here we explore DNA sequence evolution of orthologous and paralogous copies of Sry isolated from six species of ...
Global change at the Paleocene-Eocene boundary: climatic and evolutionary consequences of tectonic events
(Elsevier, 1990-07)
Events of the Paleocene-Eocene boundary provide the clearest example to date of how a tectonic event may have global climatic consequences. Recent advances permit well-constrained stratigraphic determination of several ...
Calabaria and the phylogeny of erycine snakes
(Elsevier, 1993-04)
Two major subgroups of erycine snakes, designated Charina and Eryx, are delimited with a cladistic analysis of 75 morphological characters. The hypotheses of species relationships within the two clades are (reinhardtii ...