Week10+Speciation

Welcome to Week 10 of our honors biology course!

So far you have made great progress in absorbing the ideas of the Natural Selection Theory, and are about to explore an alternative process, called Genetic Drift. But all of these processes occue //within// a species. So, how do species form? How do groups of organisms become separated to the extent that, genetically speaking, they can no longer mate?

I could give you the list of classic examples, as we will a little bit in class. But wouldn't be much more interesting to look at cases where speciation is actually studied today? Let's find out what is out there in the news of science!

Take Notes from the class powerpoint (you won't have that lesson, for lack of time): **Question 2:** Using the links provided in teacherweb, search for an article that has to do with species formation. Key words can be as follows: Speciation, Isolating / isolation mechanisms. Under the link to your article write shortly: **A. Which is the organism that they are investigating?**
 * Question 1: What is a species? You can use the definition of Campbell on page 282.**


 * B. What kind of process is separating them? Use page 284 for list of possible barriers that form between species .**

**C. Quote the title of the article and the on-line link to it.** "Color Spurs Speciation in Topical Fish" [] "Red fish, blue fish, speciation?" [] "A Tale of (More Than) 2 Butterflies: Appalachian Tiger Swallowtail Butterfly Is Hybrid of Other Swallowtails" [] "Birds Caught in the Act of Becoming a New Species" @http://www.sciencedaily.com/releases/2011/12/111208121408.htm "Color Pattern Spurs Speciation In Tropical Fish" http://www.sciencedaily.com/releases/2007/06/070612142947.htm (In your next assignment, your TEAM will collaborate on creating a booklet that describes the speciation of this or that organism. So choose the article thoughtfully) "5.3.4 Sexual Isolation as a Byproduct of Adaptation to Environmental Conditions in Drosophila melanogaster" From [|www.talkorigins.org]. **Question 3: What makes you wonder about how species form, or how they genetically interacT? Write freely.**
 * SOURCES (Added here on Saturday 03.17.12):**
 * [], scroll down to the title **5.0 Observed Instances of Speciation.**Choose one of the examples to quote, and continue from there.
 * @http://news.sciencemag.org/sciencenow/
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 * Famous examples are: Cichlids (fish), StickleBack Fish, Fruitflies (Drosophila), Finches, Warblers, Maggot Flies, Salamander in California, Fireflies, Squirrels (Grand Canyon), Orchid (flowers), more... BUT don't forget, you are looking for a __research article__, NOT for a textbook summary!
 * //ALREADY USED, DO NOT USE AGAIN://**