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Can you explain the concepts of phyletic gradualism and punctuated equilibrium?

April 26, 2017concepts equilibrium explain gradualism phyletic punctuated

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Can you explain the concepts of phyletic gradualism and punctuated equilibrium?

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Phyletic gradualism is a speciation theory rooted in uniformitarianism. It states that species continue to adapt to new environmental and biological selection pressures over the course of their history, gradually becoming new species. Phyletic gradualism holds that a species population changes gradually; that is, there is no clear line of demarcation between an ancestral species and a descendant species unless a splitting event occurs or the gradually-changing lineage is divided arbitrarily.