Advertisement

Symmetry in dynamic biological organization

  • M. A. Aon
  • S. Cortassa

Abstract

This chapter deals with the question of how millions of molecules can be spatio-temporally organized in morphogenetic fields such that form arises in developing organisms at macroscopic scales extending from micrometres to millimetres — the characteristic lengths over which biological form is generated. At present, the predominant view is that of molecular biologists: the genetic programme metaphor and the implicit belief that the ultimate explanation of morphogenesis resides in the molecular realm, i.e. that all relevant information is encoded in the DNA. Thus, a basic implication of the genetic programme metaphor is that genes, via their products, determine macroscopic biological form. One should not forget, on the one hand, that genes only encode proteins that participate either as catalysts or effectors of metabolic fluxes or as structural elements such as cytoskeleton or membrane components (Chapter 11). On the other hand, the spatio-temporal scaling of molecular events is very different from that corresponding to morphogenesis in embryonic fields. Thus, the activity of thousands of molecules in developing systems is somehow subjected to spatiotemporal coordination.

Keywords

Fluctuate Asymmetry Percolation Cluster Anterior Pole Phenomenological Coefficient Cytoskeleton Component 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Copyright information

© M.A. Aon and S. Cortassa 1997

Authors and Affiliations

  • M. A. Aon
    • 1
  • S. Cortassa
    • 1
  1. 1.Research Career Investigator from CONICETArgentina

Personalised recommendations