Global ETD Search

11	Mechanisms of entry of L-lactate into frog skeletal muscle : A micro-electrode study Mason, M. J. January 1986 (has links) No description available. 611 Frog muscle physiology
12	The conservation ecology of Rana temporaria and Bufo bufo in Leicestershire Swan, M. J. S. January 1986 (has links) No description available. 577 Frog ecology
13	Approaches to the synthesis of histrionicotoxin Tyrrell, E. January 1988 (has links) No description available. 547 Frog toxin synthesis
14	Transgenic analysis of the endodermin promoter in Xenopus laevis Ahmed, Nadeem M. January 2002 (has links) No description available. 597 African clawed frog
15	Studies on DNA sequences directing ribosomal transcription in Xenopus laevis Smith, D. R. January 1987 (has links) No description available. 572.8 Ribosome transcription in frog
16	A regiocontrolled 1,3-dipolar cycloaddition approach to the 1-azaspiroundecanol framework of histrionicotoxin Cornell, Alan January 1996 (has links) No description available. 547 Frog; Alkaloids
17	Actions of adrenergic agonists on transmembrane ion exchanges in skeletal and heart muscle Buckler, K. J. January 1987 (has links) No description available. 572 Frog muscle physiology
18	The effects of NMU in the immunobiology of Xenopus laevis James, H. S. January 1983 (has links) No description available. 572.8 Gene mutation in frog
19	Evolutionary relationships of the discoglossoid frogs - osteological evidence Clarke, B. T. January 1988 (has links) The discoglossoid Frogs (Discoglossidae and Leiopelmatidae) are generally considered to be the most primitive of the living frogs. Previous authors have grouped them on the basis of common possession of a limited number of primitive features of little phylogenetic significance, leaving the question of intra-discoglossoid relationships uncertain. The present study is a re-examination df the supraspecific relationships in the superfamily using computer-aided cladistic analyses of a large set of osteological data - specifically 95 characters (153 binary characters) in 21 modern discoglossoid taxa. Where possible, characters are assigned a polarity, principally using urodeles as the outgroup. Evolutionary relationships are inferred from the congruence of cladograms generated from compatibility and parsimony analyses of the data set. In an introductory section, modern approaches to systematic analysis and classification are reviewed and a justification for the chosen method is provided. The concepts of natural taxa and natural classifications are discussed, criteria for hypothesizing character polarities and accounts of compatibility and parsimony analysis methods are given • •A. remarkable degree of congruence' between the cladograms produced from a Le Quesne compatibility analysis and a Wagner parsimony analysis is evident. Results suggest:- (a) The leiopelmatid genera Ascaphus and Leiopelma are a sister pair but are probably only weakly related. (b) The modern DiBcoglossidae is a monophyletic group in which Alytes is sister to Bombina + Barbourula + Discoglossus. (c)Discoglossus is sister to Bombina + Barbourula. (d)Bombina and Barbourula are a sister pair. (e)All the discoglossoid genera are monophyletic. (f)Bombina comprises two species groups: small (B. bombina - B variegata - B orientalis) and large species (B maxima and B microdeladigitora). Comparisons are made with previous work and an overview hypothesis of the historical zoogeography of the discoglossoid frogs is presented. 611 Frog evolutionary relationship
20	The application of chromosomal banding techniques to the problem of karyotype stability in the Rana pipiens complex Smith, Gladys Denice, 1951- January 1977 (has links) No description available. Northern leopard frog. Karyotypes.

Search results