An ecological driver for the macroevolution of morphological polymorphism within colonial invertebrates.

J Exp Zool B Mol Dev Evol · 2021 · PMC8247048 · PMID 32445547

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an increasing trendno p-value reported

But species can migrate into and out of stable environments over evolutionary timescales, and so ergonomic theory does not predict an increasing trend in the number of polymorph types over time.

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