 |
 |
Teaching materials:
Teaching materials database
Found 17 resources for the concept: Speciation is the splitting of one ancestral lineage into two or more descendent lineages
 | Viruses and Host Evolution
Students learn about natural selection in rabbits by observing the effects of a virus on the Australian rabbit population.
|
|
 | Species, speciation and the environment
Niles Eldredge gives a historical overview of scientists' thinking on the process of speciation, along with modern perspectives on this issue.
This article appears at ActionBioscience.org.
|
|
 | Interview: Douglas Futuyma on natural selection
This interview with one of the most influential evolutionary biologists of today addresses many aspects of natural selection: how it works, examples, misconceptions, and implications.
This article appears at ActionBioscience.org.
|
|
 | Origami Birds
Students build and evolve and modify paper-and-straw “birds” to simulate natural selection acting on random mutations.
|
|
 | Speciation: The basics
Figuring out what species are is not as easy as one might think. Find out how biologists define species and how new species evolve.
This article is located within Evolution 101.
|
|
 | Anolis Lizards
Students "take a trip" to the Greater Antilles to figure out how the Anolis lizards on the islands might have evolved.
|
|
 | Evo in the news: Speciation in real time
We often think of speciation as a slow process—so slow that we can’t really observe it going on around us. This news brief from Febrary 2010 describes two examples which demonstrate that, at least occasionally, important steps toward speciation can be observed in less than 50 years.
|
|
 | Evo in the news: Happy 200th, Darwin!
This news brief, from February 2009, celebrates Darwin's bicentennial by examining what we've learned about the evolution of the Galapagos finches since Darwin's time.
|
|
 | Evo in the news: Sex, speciation, and fishy physics
More than 500 species of cichlid fish inhabit Africa's Lake Victoria. This news brief from March 2009 explains new research suggesting that the physics of light may have played an important role in cichlid diversification and in the recent drop in their diversity.
|
|
 | A Step in Speciation
Students compare different subspecies of a California salamander on a grid map of California to focus on patterns of their distribution, their likely evolutionary relationships, and probable sequence of formation from the ancestral salamander.
|
|
 | A closer look at a classic ring species: The work of Tom Devitt
The Ensatina salamander has been extensively investigated because it is a ring species — a species that demonstrates how geography and the gradual accumulation of genetic differences factor into the process of speciation. Biologist Tom Devitt continues the more than 50 years of Ensatina research by applying new genetic techniques and asking new questions about this classic evolutionary example.
|
|
 | Parsimonious explanations for punctuated patterns
Punctuated equilibrium is sometimes erroneously cited as evidence that evolutionary biology still hasn't figured out how evolution works. In fact nothing could be further from the truth. Punctuated equilibrium builds on (not tears down!) established evolutionary theory. Find out how the process works.
This article appears at SpringerLink.
|
|
 | Webcast: Selection in action
In lecture two of a four part series, evolutionary biologist David Kingsley discusses how just a few small genetic changes can have a big effect on morphology, using examples from maize, dog breeding, and stickleback fish.
This lecture is available from Howard Hughes' BioInteractive website.
|
|
| |
|
|
|
