Punctuated Equilibria and Speciation

The video explains Darwinism, a theory of evolution through natural selection, highlighting that species evolve at different rates. It introduces punctuated equilibrium, a hypothesis explaining gaps in the fossil record by suggesting species undergo long periods of stasis interrupted by rapid evolutionary changes. Examples include mollusks and trilobites, illustrating how isolated populations evolve quickly due to different selection pressures. Punctuated equilibrium refines Darwin's theory by accounting for the lack of intermediate forms in fossils.

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