The Business Professor
Punctuated Equilibrium Model
What is the Punctuated Equilibrium Model? “Punctuated equilibrium is the idea that evolution occurs in spurts instead of following the slow, but steady path that Darwin suggested. Long periods of stasis with little activity in terms of...
The Business Professor
Punctuated Equilibrium Model
What is the Punctuated Equilibrium Model? “Punctuated equilibrium is the idea that evolution occurs in spurts instead of following the slow, but steady path that Darwin suggested. Long periods of stasis with little activity in terms of...
Mazz Media
Punctuated Equilibria and Speciation
Darwin saw evolution of new species as a slow process occurring over very long periods of time. Changes that lead to new species usually take place in small populations where genetic changes can accrue rapidly. This video will help...
Bozeman Science
Speciation
Paul Andersen explains how reproductive isolation can eventually lead to speciation. Three main barriers to gene flow are included: geographic, pre-zygotic and post-zygotic. Both allopatric and sympatric speciation are discussed. A brief...
American Museum of Natural History
Niles Eldredge: Trilobites and Punctuated Equilibria
In the late 1960s, Curator Emeritus Niles Eldredge was a graduate student with a passion for trilobite eyes. He had been taught to expect slow and steady change between the specimens of these Devonian arthropods he collected for his...
Bozeman Science
Speciation
Viewers see how reproductive isolation can lead to speciation as the narrator of a video focusing on speciation explains the steps to reproductive isolation and addresses both allopatric and sympatric speciation.
Bozeman Science
Bozeman Science: Speciation
Paul Andersen explains how reproductive isolation can eventually lead to speciation. Three main barriers to gene flow are included: geographic, pre-zygotic and post-zygotic. Both allopatric and sympatric speciation are discussed. A brief...