Phyloseminar.Org 3/29 Streaming talk by Jens Lagergren on Gene Family evolution

Just got his email from the organizer of Phyloseminar.Org:

On March 29th, phyloseminar.org will present Jens Lagergren speaking

on “Probabilistic analysis of gene families with respect with gene

duplication, gene loss, and lateral gene transfer.” Abstract below.

NOTE: the seminar will begin at 10h PST, which is three hours earlier

than the previous seminars.

This is 13h Eastern Standard Time, 19h Central European Time, and 6h

in Christchurch and Auckland!

Here’s the abstract:

Incongruences between gene trees and corresponding species trees are

common. Gene duplication, gene loss, and lateral gene transfer are

three types of evolutionary events that can cause such incongruences.

I will first describe a probabilistic process that contains standard

models of nucleotide substitutions (i.e., such that underly

probabilistic methods for phylogenetic tree reconstruction) as well as

gene duplication and gene loss. This process takes place in a given

species tree and can be used to reconstruct a gene tree for a gene

family of interest and simultaneously reconcile the gene tree with the

species tree. I will describe the algorithms available for this model

and also describe how they perform on biological data compared to

competing methods. Finally, I will describe an extension of this model

that also contains lateral gene transfer and show how it performs on

synthetic data.

Hope to see you there!

Author: Jonathan Eisen

I am an evolutionary biologist and a Professor at U. C. Davis. (see my lab site here). My research focuses on the origin of novelty (how new processes and functions originate). To study this I focus on sequencing and analyzing genomes of organisms, especially microbes and using phylogenomic analysis

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