Biology Department Seminar Schedule
All Seminars are held in 109 Leidy Lab at 4:00 pm unless otherwise noted.
SPRING 2006
January 12
Title: Regulation of Transcription Initiation and Termination in
Archaea
Area: Molecular Biology of Archaea/Molecular Adaptations to Extreme
Environments
Speaker: Dr. John Reeve (Ohio State University)
Webpage: http://www.osumicrobiology.org/faculty/jreeve.htm
Hosted by: Dr. Mecky Pohlschroder
January 24, Tuesday, 12:00 noon to 1:30 pm
Title: Conservation and Divergence of Plant microRNAs
Area: Plant Biology
Speaker: Dr. Michael Axtell (Whitehead Institute)
Hosted by: Plant Biology Search Committee
January 26
Title: Genome Protection by RNAi and DNA Methylation
Speaker: Dr. Simon Chan (UCLA)
Hosted by: Plant Biology Search Committee
February 7, Tuesday, 12:00 noon to 1:30 pm
Title: Small RNA-directed gene regulation in plants.
Speaker: Dr. Allison Murray (Whitehead Institute)
Hosted by: Plant Biology Search
Committee
February 9
Title: Building a Membrane Outside the Cell: Outer Membrane Biogenesis in Escherichia
coli.
Area: Protein Targeting and Signal Transduction
Speaker: Dr.Thomas Silhavy (Princeton University)
Webpage: http://www.molbio.princeton.edu/research_facultymember.php?id=3
Hosted by: Dr. Andrew Binns
February 14, Tuesday @ Noon
Title: Partitioning the genome: mechanisms that ensure accurate chromosomes segregation in cell division.
Area: Cell Biology
Speaker: Dr.Michael Lampson (Rockefeller University)
Hosted by: Cell Search Committee
February 16
Title: TBA
Area: Community Ecology
Speaker: Dr. Jonathan Levine
Hosted by: Dr. Paul Schmidt
February 21, Tuesday, 12:00 noon to 1:30pm
Title: TBA
Area: Plant Biology
Speaker: Dr. Yijun Qi (Cold Spring Harbor)
Hosted by: Plant Search Committee
February 23
Title: Epithelial Morphogenesis: Role of Septins in polarized exocytosis and cell division.
Area: Cell Biology
Speaker: Dr. Elias Spiliotis (Stanford University)
Hosted by: Cell Search Committee
February 28, Tuesday @ Noon
Title: Endocytic vesicle morphogenesis: Imaging dynamic molecular machinery in living cells.
Area: Cell Biology
Speaker: Marko Kaksonen (UC, Berkeley)
Hosted by: Cell Search Committee
March 2
Title: Homeobox transcription factor STIMPY and the integration of developmental, hormonal, and metabolical signals in Arabidopsis.
Area: Plant Biology
Speaker: Dr. Lin Wu (The Salk Institute)
Hosted by: Plant Biology Search Committee
March 14, Tuesday 12:00 noon to 1:30pm
Title: Unexpected Interplay of Membrane Fusion Proteins and Specific Lipids in Forming a Ring-Shaped Microdomain for Vacuole Fusion.
Area: Cell Biology
Speaker: Dr. Rudy Fratti (Dartmouth Medical School)
Hosted by: Cell Biology Search Committee
March 16
Title:
Examination of the mechanisms of SHORT-ROOT cell-to-cell signaling
Area: Plant Biology
Speaker: Dr. Kim Gallagher (Duke University)
Hosted by: Plant Biology Search Seminar
March 21
Title: Small RNA-directed Gene Regulation in Plants.
Area: Plant Biology
Speaker: Dr. Allison Mallory (Whitehead Institute)
Hosted by: Plant Biology Search Seminar
March 23
Title: Ubiquitin in the nucleus: breakin' the silence and takin' out the trash.
Area: Cell Biology
Speaker: Richard Gardner (Fred Hutchinson Cancer Res. Ctr)
Hosted by: Cell Search Committee
April 13
Title: Exploring Sensory Adaptations: Adventures of an
Expeditionary Biologist.
Area: Auditory Behavior, Neurophysiology and Mechanics
Speaker: Dr. Peter Narins (University of California - Los Angeles)
Webpage: http://www.physci.ucla.edu/physcifacultyindiv.php?FacultyKey=1862
Hosted by: Dr. Marc Schmidt
April 20
Title: TBA
Area:
Speaker: Dr. Hopi Hoekstra
Hosted by: Biology Graduate Students
April 27
Title: Genetic Manipulations in the Fruit Fly Fight Club
Area: Neurobiology
Speaker: Dr. Edward A. Kravitz (Harvard Medical School)
Website: http://www.hms.harvard.edu/bss/neuro/kravitz/
Website: http://neuro.med.harvard.edu/site/faculty/kravitz.html
Movies and Interviews: http://labworks.hms.harvard.edu/fruit_fly
Hosted by: Dr. Nancy Bonini
The Following Presentation will be held at the Wu and Chen Auditorium
in Levine Hall, 34th and Walnut Streets
May 16
Speaker: Dr. Lior Pachter (UC Berkeley)
Hosted by: Dr. Junhyong Kim
Title: Epistasis and Shapes of Fitness
Landscapes
Abstract: The relationship between the shape of a fitness
landscape and the underlying gene interactions, or epistasis,
has been
extensively studied
in the two-locus
case. Gene interactions among multiple loci are usually reduced to two-way
interactions. We present a geometric theory of shapes of fitness landscapes
for multiple loci.
A central concept is the genotope, which is the convex hull of all possible
allele frequencies in populations. Triangulations of the genotope correspond
to different
shapes of fitness landscapes and reveal all the gene interactions. We
describe applications to fitness data from HIV, and discuss
the related computational challenges of computing triangulations
of polytopes.
