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SO ENDS this first of two weekends focused on patterning in the cone shell family. Fortunately, there are so outstanding virtual collections of cone shells, making actual collections by enthusiasts a thing of the past. These are an enormous source of pattern configurations, beautifully curated, for the mathematician or biologist to study without plundering the reefs. https://lnkd.in/d8vCADd View in LinkedIn

MORPHOGEN MODELS. “Therefore, in principle, morphogen models could have been used instead of the neural model. From a practical viewpoint, however, this would be considerably more difficult because a separate morphogen model is required for each shell pattern, whereas the neural model has a single set of parameters that are varied to match each pattern.” https://lnkd.in/dwfZQzE View in LinkedIn

THE COMPROMISE. “From a theoretical viewpoint, morphogen models can be viewed as an approximation to the neural net model when the range of communication between neurons is short.” https://lnkd.in/dwfZQzE View in LinkedIn

NATURE OF PATTERNING. “Structural studies provide strong evidence that shell patterns are a neurosecretory phenomenon rather than a diffusing morphogen phenomenon.” https://lnkd.in/dwfZQzE View in LinkedIn

Gorgeous free-range eggs at the heart of a pasta recipe. View in LinkedIn

THE BEDROCK OF LIFE. “Six molecules of carbon dioxide plus six molecules of water are transformed (by photosynthesis) into six molecules of oxygen (gas) and one molecule of carbohydrate (sugar):" "6CO2 + 6H2O→ 6O2 + C6H12O6" "This simple formula underpins all life on Earth.” https://lnkd.in/dwFga2X View in LinkedIn