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Some nonlinear challenges in biology

Mosconi, Francesco and Julou, Thomas and Desprat, Nicolas and Sinha, Deepak Kumar and Allemand, Jean-François and Croquette, Vincent and Bensimon, David. (2008) Some nonlinear challenges in biology. Nonlinearity, 21 (8). T131-T147.

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Official URL: https://edoc.unibas.ch/79790/

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Abstract

Driven by a deluge of data, biology is undergoing a transition to a more quantitative science. Making sense of the data, building new models, asking the right questions and designing smart experiments to answer them are becoming ever more relevant. In this endeavour, nonlinear approaches can play a fundamental role. The biochemical reactions that underlie life are very often nonlinear. The functional features exhibited by biological systems at all levels (from the activity of an enzyme to the organization of a colony of ants, via the development of an organism or a functional module like the one responsible for chemotaxis in bacteria) are dynamically robust. They are often unaffected by order of magnitude variations in the dynamical parameters, in the number or concentrations of actors (molecules, cells, organisms) or external inputs (food, temperature, pH, etc). This type of structural robustness is also a common feature of nonlinear systems, exemplified by the fundamental role played by dynamical fixed points and attractors and by the use of generic equations (logistic map, Fisher-Kolmogorov equation, the Stefan problem, etc.) in the study of a plethora of nonlinear phenomena. However, biological systems differ from these examples in two important ways: the intrinsic stochasticity arising from the often very small number of actors and the role played by evolution. On an evolutionary time scale, nothing in biology is frozen. The systems observed today have evolved from solutions adopted in the past and they will have to adapt in response to future conditions. The evolvability of biological system uniquely characterizes them and is central to biology. As the great biologist T Dobzhansky once wrote: 'nothing in biology makes sense except in the light of evolution'.
Faculties and Departments:05 Faculty of Science > Departement Biozentrum > Computational & Systems Biology > Bioinformatics (van Nimwegen)
UniBasel Contributors:Julou, Thomas
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Institute of Physics Publishing
ISSN:0951-7715
e-ISSN:1361-6544
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:16 Dec 2020 15:00
Deposited On:16 Dec 2020 15:00

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