Vodcast 1.6

Textbook Reading:

Textbook:

Chapter 17.9-17.12

OpenStax Biology:

Chapter 18- Section 18.2, 18.3

AP Bio- Evolution 6: Speciation6 of 7 of Evolution Domain. Image Credits: Biology (Campbell) 9th edition, copyright Pearson 2011, & The Internet. Provided under the terms of a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License. By David Knuffke.

Supplemental Goodness

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 discussing of polyploidy and punctuated equilibrium are also included.

Crash Course Biology #15 - Hank explains speciation - the evolutionary process by which new biological species arise - in terms of finches, ligers, mules, and dogs.

Things you should make sure you understand:

(feel free to ask questions about them in class)

Alternate definitions of “species”, and why they are necessary.
The evidence that supports that speciation is an ongoing process.

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