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The reaction norm.

  • Author: Diane Byers

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The reaction norm.
Distinct genotypes are represented by variously colored lines. Genotypes in figure 1A respond similarly to steady change in water availability, while genotypes in 1B exhibit a variable responce. The (hypothetical) species in 1B is, therefore, more suited to adapt to environmental change.

This image is linked to the following Scitable pages:

Adaptation and Phenotypic Variance

Why are the variable levels and patterns of genetic variation important? Knowledge about how traits vary can reveal the evolutionary dynamics that shape populations.

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