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About
President
Governance
Partner Institutions
Visit
People
Management
Faculty
Postdocs
Visiting Scholars
Staff
Research
Research Groups
Courses
Seminars
Join Us
Faculty
Postdocs
Students
Events
Conferences
Workshops
Forum
Life @ BIMSA
Accommodation
Transportation
Facilities
Tour
News
News
Announcement
Downloads
Qiuzhen College, Tsinghua University
Yau Mathematical Sciences Center, Tsinghua University (YMSC)
Tsinghua Sanya International  Mathematics Forum (TSIMF)
Shanghai Institute for Mathematics and  Interdisciplinary Sciences (SIMIS)
BIMSA > Seminar on Bioinformatics Phylogenetic tree of plant at the family level
Phylogenetic tree of plant at the family level
Organizer
Shing Toung Yau
Speaker
Nan Sun
Time
Wednesday, March 22, 2023 8:30 PM - 8:50 PM
Venue
Online
Abstract
The methods to construct the distance-based phylogenetic tree include UPGMA, WPGMA, NJ, ME, FM and their extended algorithms. UPGMA and WPGMA algorithms need strong hypothesis, which is that the evolutionary rate needs to be constant (molecular clock hypothesis). So they are not often used now. Traditional ME and FM are time-consuming when the number of species is large. NJ is a better choice and can get an accurate result in a reasonable time, but the limitation is that the root can’t be determined. Therefore, we introduced the outgroup, and use the ensemble algorithm, FastME (http://www.atgc-montpellier.fr/fastme/) based on BioNJ, and the outgroup to do the phylogenetic analysis for plant families. I will introduce them in detail.
Beijing Institute of Mathematical Sciences and Applications
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