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Modern evolutionary synthesis

1942MajorContested

Julian Huxley's book names the merger of Darwinian selection, Mendelian genetics and field biology. Evolutionary biology gets a single framework.

Contested history

Consensus: Natural selection acting on genetic variation is the core mechanism of adaptive evolution, as the modern synthesis holds.

Modern synthesis as the core frameworkEstablished
Population genetics, fossils and genomics all fit selection, drift, mutation and gene flow.
Extended evolutionary synthesisDebated
Some biologists argue developmental bias, plasticity and niche construction deserve a larger causal role; others see these as already covered.

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