This web unit introduces two kinds of speciation (allopatric and sympatric) through an interactive task: the speciation of a group of tropical angiosperms called Fuchsia. Before starting the task, students are advised to review the definition of allopatric and sympatric speciation by entering "click here".
In the Fuchsia task, the website presents observations and then ask students to...
Great Danes stretch more than a meter from paw to shoulder and can easily weigh more than 90 kilograms. A Chihuahua fits snugly inside a purse. Domestic dog breeds are more varied in body size and shape -- not to mention coat color and fur length -- than any other land-based mammal. Yet, according to a new study, a mere two to six regions in doggy DNA account for most of this diversity.
This website is a systematic overview of Eukaryota, including chromista, testaceafilosea, radiolaria, alveolates, rhodophyta, slime molds, primitive flagellates, amoebae & parasite taxa, green algae, choanoflgellata, fungi, plantae, and animalia. By clicking the boxes containing a picture of each category, readers can get more in-depth information about that category. Most web pages contains...
If you're looking for information about how individual species arise, how systematists classify them, or how many species are currently living on the planet, you've come to the right place. For information about species extinction, see the Deep Time/History of Life page.
In this simulation, students investigate the relationship between guppy coloration and predator species. Students can see different combinations of guppy colorations within the same stream subdivided into three regions based on predator type. In the simulation, the students can select the beginning guppy coloration and predator and then watch the population changes through multiple generations....
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