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Developmental Biology

Field: Developmental Biology

Sequence of Expressions

Principle

Canalization

The measure of the ability of a population to produce the same phenotype regardless of variability of its environment or genotype.
The spatial distribution of a morphogen concentration determines the pattern of development in a tissue.
Ontogeny recapitulates phylogeny; the development of an organism (ontogeny) expresses all the intermediate forms of its ancestors throughout evolution (phylogeny).
A conceptual definition of a morphogen, describing how a gradient of a single substance can determine different cell fates based on concentration thresholds.