Morphogen gradient (Wolpert French-flag)

Layer 3 — Biologyin the Developmental Biology subtree

Wolpert 1969 French-flag model: positional information from morphogen-concentration gradient; threshold-readout into discrete cell fates; bicoid-Drosophila + Sonic-hedgehog vertebrate validations.

Related concepts

Diffusion equation
Reaction-diffusion equation
Heidelberg screen (Nüsslein-Volhard 1980)
DV (Anderson-Roth 1987)
Turing pattern (1952)

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