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Showing papers in "Journal of Theoretical Biology in 1997"


Journal ArticleDOI
TL;DR: The total energy cost of migration is roughly divided between flight and stopover as 1:2, probably with a relatively longer stopover time in larger species and strong selection pressures to optimize the fuel accumulation strategies during stopover episodes are expected.

415 citations


Journal ArticleDOI
TL;DR: The spatial structure modifies the condition for the development of cooperation in two different ways: it facilitates the evolution of cooperation due to spontaneously formed positive correlation between neighbors, but it also inhibits cooperation because of the advantage of being spiteful by killing neighbors and then replacing them.

326 citations


Journal ArticleDOI
TL;DR: In a homogeneously mixing population of E. coli, colicIn-producing and colicin-sensitive strategies both may be evolutionarily stable for certain parameter ranges, with the outcome of competition determined by initial conditions.

304 citations


Journal ArticleDOI
TL;DR: Griesemer's concept of a reproducer is outlined, which brings out the essential role of development in evolution, and it is suggested that this binding originated, not as a step in protein synthesis, but in the formation of coenzymes in a metabolically complex RNA world.

298 citations


Journal ArticleDOI
TL;DR: The R i method has been used to identify previously undescribed but experimentally verified DNA binding sites and demonstrates clearly that the consensus sequence is highly unusual, and hence is a poor method to describe naturally occurring binding sites.

290 citations


Journal ArticleDOI
TL;DR: The present model suggests that masting can take place due to the resource balance of each plant even without any interannual environmental fluctuations, and may result in evolutionary benefits to each individual.

279 citations


Journal ArticleDOI
TL;DR: Analytical approximations for the rate of emergence of resistant virus in different compartments of the virus population such as free plasma virus, cells infected with actively replicating virus, long-lived infected cells and cells carrying defective provirus are provided.

259 citations


Journal ArticleDOI
TL;DR: Based on the quasi-steady state approximation, a closed form solution for the total time evolution of the reactant concentrations in the basic enzyme−substrate reaction is reported for the first time in this article.

255 citations


Journal ArticleDOI
TL;DR: In this article, the authors developed a diffusion-reaction model, in which density dependent cell movements are incorporated by the level of nutrient concentration available for the cell, which predicts the growth velocity of a colony as a function of the nutrient concentration.

235 citations


Journal ArticleDOI
TL;DR: A three-dimensional hybrid cellular automata (CA)/partial differential equation (PDE) model is presented that allows for the study of morphogenesis in simple cellular systems and causes the amoebae to spatially self-organize.

230 citations


Journal ArticleDOI
TL;DR: The modular evolution of the proton-pumping NADH:ubiquinone oxidoreductase complex and the possible origin of its modules are discussed in this paper.

Journal ArticleDOI
TL;DR: A simple model predicts the energy cost of bipedal locomotion for given speed, stride length, duty factor and shape factor, and predicts lower duty factors and higher shape factors than are normally used, but the relationships between these gait parameters and speed parallel the empirical relationships.

Journal ArticleDOI
TL;DR: The motion of swimming micro-organisms that have a preferred direction of travel, such as single-celled algae moving upwards (gravitaxis) or towards a light source (phototaxis), is modelled as the continuous limit of a correlated and biased random walk as the time step tends to zero.

Journal ArticleDOI
TL;DR: The transport and uptake of inspired odorant molecules in the human nasal cavity were determined using an anatomically correct three-dimensional finite element model and there was an overall decrease in odorant flux as the location on the olfactory surface was varied, implying a rapid decrease in perceived odor intensity with cessation of nasal airflow.

Journal ArticleDOI
TL;DR: This paper constructs a general model of biological signaling, and shows the importance of signal design, and points at three methods by which signals may be reliable: by trade-offs between cost and benefits, by design and by convention.

Journal ArticleDOI
TL;DR: It is argued that macroevolution and speciation on "rugged" fitness landscapes proceed according to the properties of the corresponding holey landscapes, which may be related to the patterns of speciation.

Journal ArticleDOI
TL;DR: It seems as if DNA sequences possess much more freedom in the combination of the symbols of their alphabet than written language or computer source codes.

Journal ArticleDOI
TL;DR: A physical-mathematical model of a new class of dendrimers, constructed entirely from unique nucleic acid monomers that are designed such that sequential hybridization adds successive layers of monomer in a geometric expansion of both mass and free single-stranded sequences, called arms, at the surface.

Journal ArticleDOI
TL;DR: This hypothesis is consistent with a variety of evidence, including the apparent irrelevance of older sisters to the sexual orientation of later-born males, the probable involvement of H-Y antigen in the development of sex-typical traits, and the detrimental effects of immunization of female mice to H- Y antigen on the reproductive performance of subsequent male offspring.

Journal ArticleDOI
TL;DR: It is suggested that cross-species protein identification by rapid techniques will be done best by protein amino acid composition and protein molecular weight.

Journal ArticleDOI
TL;DR: It is shown how the Popperian situational logic of historic understanding and thePopperian principle of explanatory power of scientific theories lead to a methodology of biochemical retrodiction, whereby common precursor functions are constructed for disparate successor functions.

Journal ArticleDOI
TL;DR: The goal is to clarify the situation by defining clearly and precisely the notions of genetic complement, genome, genotype, phenetic complement, and phenotype and analysing the logical structure of this family of concepts.

Journal ArticleDOI
TL;DR: The results show that communities built from species-rich pools develop more slowly to invasion-resistant states, and that saturation of local communities such that the number of species present locally becomes uncoupled from the richness of the pool.

Journal ArticleDOI
TL;DR: The pattern of food intake, appropriately scaled to mature size, with time is shown to depend only on the values of B* andQ, and the rate of intake of a food with a known energy content can be predicted for a known animal as a function of time only.

Journal ArticleDOI
TL;DR: It is asserted that molecular complementarity is much more widespread than is commonly acknowledged in biological systems, if not actually ubiquitous, and demonstrated that such aggregates can have properties not predictable from their individual components, thus providing a means for understanding how new functions emerge during evolution.

Journal ArticleDOI
TL;DR: In this article, a new mathematical model of mass extinction was proposed, which does not rely on coevolutionary effects and in which extinction is caused entirely by the action of environmental stress on species.

Journal ArticleDOI
TL;DR: Analysis of the homogeneous steady states shows that, for this model, normal tissue is unstable to the introduction of mutant cells despite such an immune response, but that the composition of the resulting tumour can be significantly altered, suggesting that tumour heterogeneity may arise, in part, as a natural consequence of the macrophage infiltration.

Journal ArticleDOI
TL;DR: The coevolution theory, which considers the genetic code as a map of the biosynthetic relationships between amino acids, seems to be based on a mechanism that links it closely to certain stages of the origin of metabolism, which makes it preferable to other theories proposed as explanations of genetic code origin.

Journal ArticleDOI
TL;DR: Results from a series of related new models for the local dynamics of cardiac tissue strongly suggest that quantities with time constants of the order of 50 and 400 ms exist and affect action potential formation in heart tissue.

Journal ArticleDOI
TL;DR: The results presented here provide counter-examples to recent studies that question the applicability of "Red Queen" and "arms race" metaphors for continuously varying traits; argue for the existence of crucial differences between major and minor loci dynamics; and attribute a stabilizing role to coevolution.