2 Credits- half-semester module, 21 March-27 April 2016
Mon & Wed 12:20-1:30 followed by Lab Minipresentations 1:45-2:00. Bio-Pharm 3rd floor conference room
Mon & Wed 2:00-4:00 (BioPharm 325).
Chris Simon, Biopharm 305D, 6-4640, <firstname.lastname@example.org>
Graduate Assistant: Ursula King, Biopharm 319, <email@example.com>; 6-3937
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.
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. Ursula 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 1st May: Lab project and notebook due. Take Home FINAL EXAM handed out. Sunday 8th May: Take home final due.
|Lecture 1. An introduction to looking at your data: How molecules evolve.
| Reading too big to post, sent out by Chris. How Molecules Evolve Bibliography
|| Data checks at every step. Mechanics of Lab; Start Nucleospin kit extractions .
|Wednesday Mar 23
||Lecture 2. ASRV, models of evoltion, and the history of molecular systematics
|Kjer & Honeycutt , Soubrier et al. , Sullivan & Swofford , ASRV Bibliography
|| Mini-presentation: Explanation of class Tettigades project , DNA extraction- ultrapure to ultradirty, (phenol-chloroform/CsCl gradients to filters to salting out to chelex, etc.) Ursula .
LAB: Plant extraction . Finish Nucleospin extractions
| Lecture 3. History of ASRV (cont.) 1980-present. Weighting stems and loops and correlated changes, calculating the probability of substitution for sites, invariant sites models & negative binominal models, the two components of evolutionary trees, problems associated combining data, multiple gene histories for single taxa, history of combining data
| Bull et al 1993 , Pagel and Mead 2004 , Combining Data & Partitioning Bibliography
|| Read these few pages before lab: the introduction to the primer compilation at the end of Simon et al. 1994, in addition, study the primer comparisons among animals for the COI and COII genes in that same primer compilation. In addition, read the introduction to the primer compilation that is at the beginning of the supplemental information in Simon et al. 2006, Attached here: |
Mini-presentation: Primer Design- Primer exercise introduction; the beginning of Geneious. Ursula
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. Homework due April 13th.
|Wednesday Mar 30
|| Lecture 4. History of combining data (cont.), Lack of agreement among character subsets, Random error vs systematic error, Assumptions of combined analysis, Bull et al. vs. Chippindale & Wiens; “Homothermia”, comparing trees
|| Combining Data & Partitioning Bibliography
|| Mini-presentation: The Polymerase Chain Reaction- how it works & optimizing reactions. Kate
LAB: Set-up PCR reaction (mtDNA of Tettigades species, COI barcode, two directions), run gel.
| Lecture 5. Tests for combining data; testing whether the same tree underlies each data partition (tests of topology), partitioning, choosing among models for pre-assigned partitions, automated partition assignment and partition simplification, model averaging and mixture models
| Combining Data & Partitioning Bibliography Sullivan and Joyce 2005. Frandsen et al 2015 Kainer and Landfear 2015. (Due Mon April 11)
|| Mini-presentation: Different methods for cleaning PCR products for sequencing reactions.Ursula.
LAB: Purify PCR products and set-up sequencing reactions.
|Wednesday Apr 6
||Lecture 6. Mixtures of Trees and Species Trees. Long branches, taxon sampling, Felsenstein-zone & anti-felsenstein zone; long branch pruning strategy
|| Readings: Long Branches, Taxon Sampling, Big Trees Readings for: Species Trees. Lecture 6 (part 1.)
| Mini-presentation: How Big Dye works, chromatograms, and troubleshooting. Kevin |
LAB: Sephadex and put samples on the ABI. Looking at sequences using Sequencher/Geneious, making contigs, blasting sequences in Genbank
|Lecture 7. Big Trees, Long Branches, & Simulations
|| Swofford et al. 2001 Brandley et al. 2011
|| Mini-presentation: - Cloning DNA. Alison
LAB: Cloning- Long Lab.
|Wednesday Apr 13
||Lecture 8. Problems associated with nodal support
|| Nodal Support Bibliography Salichos and Rokas 2013 Betancur et al. 2014 (Comments on Salichos and Rokas 2013)
|| Mini-presentation: Depositing sequences in GenBank Shareef|
LAB: RNA isolation- TRIzol.
|Lecture 9. ALRV: heterotachy, covarion models;Among Lineage rate variation: Covarion evolution: codon models
|| Lockhart et al. 2006. Heterotachy and trees , Lockhart and Steel 2005. A tale of two processes , Gruenheit et al. (Lockhart) 2008. Covarion under changing proportions var sites
|| Mini-presentation: Ancient DNA & Museum DNA protocols Kate |
LAB: PCR clones.
|Wednesday Apr 20
||Lecture 10: Heterotachous evolution continued, Covarion Models, The Case for Stationary Genes, Mixture of Branch Lengths for building trees and studying selection. Covarion Mixture Models.
|| Mini-presentation: Numts |
LAB: Sephadex and put clone samples on ABI.
|Lecture 11: Secondary structure & alignment.
|| Secondary structure & alignment readings
rRNA secondary structure assignment
Hickson et al 1996 (for reference only - no need to summarize)
Cow rRNA secondary structure example
| Mini-presentation: RNA: extraction and what it can be used for
LAB: Compare products with those from PCR with DNA vs cloning template and complete mtDNA sequences.
|Wednesday Apr 27
||Lecture 12: Combining nuclear and organelle data for evolutionary insights on specition and hybridization (Dropbox link emailed).
Additional lecture material on Molecular Clocks
Additional lecture material on comparing trees
| Ho, 2014. Changing molecular evolutionary clock
Molecular Clock readings
| Guest Lecture: Ursula, Next Gen sequencing applications, Transcriptomics, Rad Tags.(Dropbox link emailed)
| Lab notebook due. Take home final handed out.
|| Nothing new
|| No Lab
|Final Exam due, emailed to Ursula
|| Nothing new
|| You are so done with this class
Final Exam Files
Final Exam Instuctions , Shull et al Manuscript , Shull et al figures , Published Shul et al 2001 .