A Calculus of Purpose

[Roger Critchlow-2]

Here's a nice essay on the use of models in understanding biological
systems, most specifically the stripes generated by the Hedgehog and
Wingless genetic systems in Drosophila development.

http://www.plosbiology.org/plosonline/?request=get-document&doi=10.1371/journal.pbio.0020164

The question posed is whether all the complexity seen in genetic
regulatory networks serves some purposes or is it just extraneous junk
to irritate scientists.

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