Title: Week 9 overview
Course: BIO-182 RTZ > Section: week 9 - Deuterostomes

Image caption: cc by sa

TO DO before [Date/Time selected here]:

- Read: Chapter 33 (Deuterostomes)
- Complete:  LaunchPad Learning Curve (Chapter 33)
- Complete: LaunchPad Learning Activities (Chapter 33)
- Optional: Lab: Transition to Land (Animals)
- Optional: LaunchPad Summative Quiz
- Optional: read the lecture notes provided (ppt) To actually see my notes, you must download the presentation.
- Optional: Exam #3c [Your due date here]

CHAPTER OVERVIEW:

Chapter 33: The Deuterostomes.

This chapter concludes our examination of the evolution and diversity of animals. Chapter 33 provides an overview of the Deuterostomes. Animals are grouped in this taxa due to a feature of early embryological development - primarily that the embryonic blastopore becomes the anus rather than the mouth, as seen in the protostomes. In this case, the mouth developes secondarily to the anus. Deuterostomes include organisms as diverse as sea stars and vertebrates.

- In the first section of this chapter (33.1), the authors define what it means to be a deuterostome. Skim most of this section but be aware of the phylogenetic relationships depicted on page 679. Be able to answer the questions in RECAP 33.1 (pg 680).
- The following section (33.2) describes the features that distinguish two of the three major groups within the deuterostomes- the echinoderms and hemichordates. Read this section carefully, focusing in particular, on the unique features of the echinoderms. Be sure you are able to answer the questions in RECAP 33.2 (pg 68).
- Section 33.3 examines derived features of the chordates. Read this section paying special attention to pages 683 - 686. Again, be able to answer questions in the RECAP 33.3 box.
- Evolution of lung-sacs set the stage for the transition to land. Section 33.4 describes features that allowed for this very successful move. Read this entire section carefully and make sure you are able to answer the questions in the RECAP 33.4 on page 700.
- Finally, section 33.5 describes traits that separate the primates from other vertebrates. Skim this section.

SUPPLEMENTAL MATERIAL:

- Bio2 - lecture 12: Deuterostomes

https://www.youtube.com/watch?v=63H6YaSG8vA

- Bozeman Biology: animals (revisit) go to around minute 6:00 for discussion regarding deuterostomes.

https://www.youtube.com/watch?v=wd-QnKlfZHI

- Craig Savage: Invertebrate Diversity (pt 4) - although a bit dry, filled with good information

https://www.youtube.com/watch?v=SiaIouBgzPc

- follow the previous video with this one: his discussion of vertebrate diversity.

https://www.youtube.com/watch?v=DkHYDp-iCO0