On the Identifiability of Phylogenetic Networks under a Pseudolikelihood model

10/05/2020
by   Claudia Solis-Lemus, et al.
0

The Tree of Life is the graphical structure that represents the evolutionary process from single-cell organisms at the origin of life to the vast biodiversity we see today. Reconstructing this tree from genomic sequences is challenging due to the variety of biological forces that shape the signal in the data, and many of those processes like incomplete lineage sorting and hybridization can produce confounding information. Here, we present the mathematical version of the identifiability proofs of phylogenetic networks under the pseudolikelihood model in SNaQ. We establish that the ability to detect different hybridization events depends on the number of nodes on the hybridization blob, with small blobs (corresponding to closely related species) being the hardest to be detected. Our work focuses on level-1 networks, but raises attention to the importance of identifiability studies on phylogenetic inference methods for broader classes of networks.

READ FULL TEXT

page 1

page 2

page 3

page 4

research
10/12/2020

Bayesian Weighted Triplet and Quartet Methods for Species Tree Inference

Inference of the evolutionary histories of species, commonly represented...
research
05/06/2022

The Tree of Blobs of a Species Network: Identifiability under the Coalescent

Inference of species networks from genomic data under the Network Multis...
research
07/18/2017

Efficient and consistent inference of ancestral sequences in an evolutionary model with insertions and deletions under dense taxon sampling

In evolutionary biology, the speciation history of living organisms is r...
research
07/13/2020

Species tree estimation under joint modeling of coalescence and duplication: sample complexity of quartet methods

We consider species tree estimation under a standard stochastic model of...
research
07/14/2013

Map of Life: Measuring and Visualizing Species' Relatedness with "Molecular Distance Maps"

We propose a novel combination of methods that (i) portrays quantitative...
research
06/05/2023

Discovering Novel Biological Traits From Images Using Phylogeny-Guided Neural Networks

Discovering evolutionary traits that are heritable across species on the...

Please sign up or login with your details

Forgot password? Click here to reset