Now showing items 11-20 of 50
Hierarchical selection theory and sex ratios I. General solutions for structured populations
(Elsevier, 1986-06)
Models of sex-ratio evolution in structured populations are derived withG. R. Price's covariance form for the hierarchical analysis of natural selection (1970, Nature 227, 520-521). Previous work on competition among related ...
Structural evolution and flip-flop recombination of chloroplast DNA in the fern genus Osmunda
(Springer-Verlag, 1986-07)
The evolution and recombination of chloroplast genome structure in the fern genus Osmunda were studied by comparative restriction site mapping and filter hybridization of chloroplast DNAs (cpDNAs) from three species — 0. ...
A model of weak selection in the infinite alleles framework
(Springer-Verlag, 1986-08)
Ewens (1972) proposed a model in the infinite allele framework for populations with neutrality of all alleles at a particular locus. This paper proposes a generalisation of Ewens' result for situations where there is a ...
Phencyclidine-like behavioral effects in pigeons induced by systemic administration of the excitatory amino acid antagonist, 2-amino-5-phosphonovalerate
(Elsevier, 1986-09-15)
A selective N-methyl-D-aspartate antagonist, DL-2-amino-5-phosphonovalerate, was found to produce PCP-like catalepsy, discriminative stimulus effects, and stereotyped operant responding in pigeons when administered ...
Isolation of galactosyltransferase from human milk and the determination of its N-terminal amino acid sequence
(Elsevier, 1986-07-16)
Galactosyltransferase (EC 2.4.1.22), purified to homogeneity from human milk by affinity chromatography, had an apparent molecular weight of 53,000 as determined by denaturing polyacrylamide gel electrophoresis. Subtration ...
Dominance of iminopeptidase activity in the human oral bacterium Treponema denticola ATCC 35405
(Springer-Verlag, 1986-11)
Treponema denticola ATCC 35405, a human oral spirochete associated with periodontal disease, was shown to contain three enzymes (I, II, and III) with proline iminopeptidase activity. II and III were considered to be true ...
The effect of acquired microbial enzymes on assimilation efficiency in the common woodlouse, Tracheoniscus rathkei
(Springer-Verlag, 1986-06)
The digestive tract of the common woodlouse, Tracheoniscus rathkei Brandt (Isopoda: Oniscoidea), contains digestive enzymes active against α-1,4-glucans, which are the chief storage polysaccharides of vascular plants, ...
Isolation and characterization of a novel cytochrome P-450-like pseudogene
(Elsevier, 1986-01-29)
SummaryA rabbit liver P-450-like pseudogene has been isolated from a [lambda] phage genomic library. Sequence analysis revealed structural homology with respect to the rat P-450b and P-450e genes as well as a similar ...
Coupling of concanavalin A to cellulose hollow fibers for use in glucose affinity sensor
(Wiley Subscription Services, Inc., A Wiley Company, 1986-02)
This article describes a method for the chemical immobilization of concanavalin A (Con A) on the inside wall of a single hollow cellulose fiber for use in glucose affinity sensor. Periodate oxidation of cellulose fiber ...
Co-factors and HIV: What determines the pathogenesis of AIDS?
(Wiley Subscription Services, Inc., A Wiley Company, 1986-12)
No Abstract.