Evolution
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Evolution
Jun 18, 2009
The Patterns of Evolution
By:
Dennis Holley
Evolution may take several paths. Species may evolve apart (diverge), evolve similar structures and appearances (converge), or evolve together (coevolve).
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Jun 15, 2009
Charles Darwin and His Theory of Evolution
By:
Dennis Holley
Darwin's book, "Origin of Species", became the cornerstone of modern evolutionary theory. What are the main components of Darwin's grand theory of evolution?
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Jun 15, 2009
A Short History of Evolutionary Theory
By:
Dennis Holley
The development of evolutionary theory is a long and convoluted tale encompassing thousands of years of time and the contribution of many individuals along the way.
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Jun 15, 2009
Gene Flow as a Mechanism of Evolution
By:
Dennis Holley
This planet teems with an amazing diversity of living species. How does gene flow help drive the process of evolution to produce such a riotous multitude of life?
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Jun 13, 2009
Genetic Drift as a Mechanism of Evolution
By:
Dennis Holley
This planet teems with an amazing diversity of living species. How does genetic drift help drive the process of evolution to produce such a riotous multitude of life?
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Jun 12, 2009
The Fossil Record of Evolution
By:
Dennis Holley
To hold a fossil is to touch life from the far distant past. What do bits and pieces of ancient bone and shell reveal about the types and diversity of ancient life?
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Jun 12, 2009
Natural Selection as a Mechanism of Evolution
By:
Dennis Holley
This planet teems with an amazing diversity of living species. How does natural selection help drive the process of evolution to produce such a riotous multitude of life?
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Jun 12, 2009
Mutation as a Mechanism of Evolution
By:
Dennis Holley
This planet teems with an amazing diversity of living species. How do mutations help drive the process of evolution to produce such multitudes?
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Jun 11, 2009
Comparative Anatomy as Evidence of Evolution
By:
Dennis Holley
Homologous traits reveal a common ancestor but analogous traits point to convergent evolution. The challenge for evolutionary biologists is to determine the difference.
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Jun 11, 2009
The Molecular Record of Evolution
By:
Dennis Holley
Buried deep in the genome of every species are molecular clues to the origin and evolution of that species.
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May 20, 2009
Hobbits?
By:
Holly Beth Anderle
Small skeletons found in a cave in Indonesia may be proof that a tiny race of humans once lived in that area.
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Feb 23, 2009
Homoplasies, Similar Character Traits
By:
Thomas Wyatt
A homoplasy is a feature shared by different organisms that was not present in their most recent common ancestor. Homoplasies demonstrate adaptation in the living world.
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Jan 12, 2009
Archaeopteryx and Bird Flight
By:
Jenny Ashford
Archaeopteryx is almost definitely a link between dinosaurs and modern birds, but there is still debate as to how - or even if - it ever flew.
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Dec 12, 2008
The Late Ordovician Mass Extinction
By:
Laura Wormuth
Although not well-known to the public and typically overlooked by the press, the late Ordovician mass extinction event is the most understood by paleontologists.
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