Difference between revisions of "Molecular Systematics Spring 2014"

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|Apr 28 ||Lecture 11: ALRV: heterotachy, covarion models; long branch problems, taxon sampling, meaning of "basal taxon"
|Apr 28 ||Lecture 11: ALRV: heterotachy, covarion models; long branch problems, taxon sampling, meaning of "basal taxon"
||  || | '''Mini-presentation:''' RNA: extraction and what it can be used for
||  || | '''Mini-presentation:''' RNA: extraction and what it can be used for
'''LAB:''' RNA isolation- Nucleospin RNA Kit
'''LAB:''' RNA isolation- Nucleospin RNA Kit

Revision as of 12:09, 8 April 2014

2 Credits- half-semester module, 24 March-30 April 2014

Mon & Wed 12:30-1:45 Bio-Pharm 3rd floor conference room

Mon & Wed 2:00-4:00 (first half-hour in conference room, remainder in BioPharm 325).

Chris Simon, Biopharm 305D, 6-4640, <chris.simon@uconn.edu> Graduate Assistant: Russ Meister, Biopharm 325A, <Russell.Meister@uconn.edu>; 6-3947

Readings: will be posted as PDF’s.

Handy reference books: 1) Molecular Systematics, 2nd ed. (Hillis, Moritz & Mable, eds. 1996, Sinauer) especially Chapter 11 by Swofford et al. on Phylogenetic Inference; 2) Molecular Evolution: A phylogenetic Approach (Page & Holmes 1998, Blackwell); 3) Inferring Phylogenies (Felsenstein 2004, Sinauer); The Phylogenetic Handbook (eds. Philippe Lemey, Marco Salemi, and Anne-Mieke Vandamme, 2010).

Lecture Goals: The course will focus on the basics of molecular systematics theory and practice from the point of view of the data. We will explore the ways in which an understanding of processes of evolution of molecular data can help in the construction of evolutionary trees. Lectures will examine some of the most serious problems in evolutionary tree construction: nucleotide bias, alignment, homoplasy, among-site rate variation, taxon sampling, long branches, big trees, heterogeneous rates of evolution among branches, covarion shifts.

Laboratory Goals: Labs will cover basic techniques in molecular systematics from DNA extraction to sequencing, alignment and cloning. This lab will be of interest to both experienced and novice molecular systematists because we will try newly developed kits/techniques and compare them to older ones.

Short Assignments:

1) For each topic a bibliography will be provided including one focal paper for which the PDF will be posted. Each student will need to turn in a one-page summary of the importance of each focal paper (1 or occasionally 2 papers per week).

2) The week prior to the start of classes you will be given a checklist discussing practical considerations, organization and data checks for molecular systematics. In certain sections you are asked to answer questions and explain how these procedures are modified in your lab.

3) There will be a short "secondary structure alignment assignment" during the semester.

4) Each student will keep a laboratory notebook and hand-in data collected during the course in the form of an alignment and a nexus data file. Various exercises will be performed in laboratory and some will be finished outside of class. These are detailed in the laboratory syllabus.

5) For each Lab, one student will present a 10-15 minute Powerpoint presentation relating to techniques used in that day’s lab. Russ will be available to advise you, but use web searches and try to do as much as possible on your own. These Powerpoint presentations will be posted on the class website so that in the future when you teach a molecular systematics class, they can be used as a starting point to revise and develop lectures of your own.

Final Exam: The final exam will be a take home test in which each student critiques the first draft of a paper submitted to Systematic Biology (submitted in the past but making comments as if it were submitted today). Each student will also compare the submitted version to the published version. The answer key will be the actual review containing reviewers, associate editors, and editor’s comments (with permission of authors, reviewers and editors) and a list of critical points that need to be considered by the authors.

Final Due Dates: Sunday May 4th: Lab project and notebook due. Take Home FINAL EXAM handed out Sunday May 6th. Take home final due Sunday May 11th.

Syllabus: Pdficon small.gif


Day Topics Reading/Assignment Lab
Mar 24 Pdficon small.gifAn introduction to looking at your data: How molecules evolve.
Reading too big to post, sent out by Chris. BibliographyPdficon small.gif Data checks at every step. Mechanics of Lab; Explanation of class Tettigades project Pdficon small.gif. Start Nucleospin kit extractions
Mar 26 Pdficon small.gifThe many roles of biological systematics
Kjer & Honeycutt Pdficon small.gif, Soubrier et al. Pdficon small.gif, Sullivan & Swofford Pdficon small.gif, BibliographyPdficon small.gif Mini-presentation: DNA extraction- ultrapure to ultradirty, (phenol-chloroform/CsCl gradients to filters to salting out to chelex, etc.) RussPdficon small.gif. Also, Johana gave a small presentation about her work with different extraction methodsPdficon small.gif.

LAB: Chelex extraction. Finish Nucleospin extractions

Mar 31 Pdficon small.gif Problems associated combining data, multiple gene histories for single taxa (Species trees and gene trees)
Bull et al 1993 Pdficon small.gif, Pagel and Mead 2004 Pdficon small.gif, Bibliography Pdficon small.gif Before lab, read the introduction to the primer compilation, study the primer comparisons among animals for the COI and COII genes in Simon et al. 1994. And Simon et al. 2006. Mini-presentation: Primer Design- Primer exercise introduction; the beginning of Genious. Russ Pdficon small.gif

LAB: Run extractions on gels. Demonstrate DNA & RNA extraction quantification and the use of the nanodrop. Homework: Troubleshoot and improve “universal” primers for COI and COII in comparison to four complete Tettigades sequences

Apr 2 Pdficon small.gif Lecture 4. Choosing partitions, comparing trees Mini-presentation: The Polymerase Chain Reaction- how it works & optimizing reactions. Johana Goyes

LAB: Set-up PCR reaction (mtDNA of Tettigades species, COI barcode, two directions), run gel

Apr 7 Lecture 5. Guest Speaker. Paul Frandsen. *See syllabus for note* Lecture 5 Bibliography Pdficon small.gif Mini-presentation: Different methods for cleaning PCR products for sequencing reactions Jimmy Bernot

LAB: Purify PCR products and set-up sequencing reactions

Apr 9 Lecture 6. Secondary structure & alignment (cont.); Molecular clocks Brandley et al. 2011 Pdficon small.gif, Lecture 6 Bibliography Pdficon small.gif Mini-presentation: How Big Dye works, chromatograms, and troubleshooting

Andrew Frank
LAB: Sephadex and put samples on the ABI; Looking at sequences using Sequencher/Geneious, making contigs, blasting sequences in Genbank

Apr 14 Lecture 7. Long branches, taxon sampling, Felsenstein-zone & anti-felsenstein zone; long branch pruning strategy Mini-presentation: - Cloning DNA

Kaitlin LAB: Cloning- Long Lab.

Apr 16 Lecture 8. Big Trees, Long Branches, & Simulations Mini-presentation: Depositing sequences in GenBank

LAB: PCR clones/Set up sequencing reactions- Long Lab

Apr 21 Lecture 9: Among Lineage rate variation: nucleotide bias among taxa Mini-presentation: Ancient DNA & Museum DNA protocols

LAB: Sephadex and put clone samples on ABI

Apr 23 Lecture 10: Among Lineage rate variation: Covarion evolution: codon models Mini-presentation: Numts

LAB: Compare products with those from PCR with DNA vs cloning template and complete mtDNA sequences

Apr 28 Lecture 11: ALRV: heterotachy, covarion models; long branch problems, taxon sampling, meaning of "basal taxon" Mini-presentation: RNA: extraction and what it can be used for

Russ LAB: RNA isolation- Nucleospin RNA Kit

Apr 30 Lecture 12: Tests of topology and problems associated with nodal support Guest Lecture: Beth Wade, Next Gen sequencing applications, Transcriptomics, Rad Tags, Class Discussion on the implications for modeling data for phylogenetic analysis.
May 4 Lab notebook due. Take home final handed out. Nothing new No Lab
May 11 Final Exam due, emailed to Russ Nothing new You are so done with this class

Old Site

Molecular Systematics Website from 2012 (http://hydrodictyon.eeb.uconn.edu/eebedia/index.php/MolSys2012)