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Phylogeny

Phylogeny

Phylogeny is concerned with the evolutionary diversification of organisms or groups of organisms. A group of organisms with a name is called a taxon (singular). Taxa (plural) can span different levels of the evolutionary hierarchy. For instance, the group containing all birds is a taxon (comprising the class Aves), and the group of all species of daisies (the genus Bellis) is a taxon. Phylogenies can likewise include just one genus (i.e., depict species relationships) or span an entire kingdom.

Evolutionary Relationships through Genome Comparisons

Evolutionary Relationships through Genome Comparisons

Genome comparison is one of the excellent ways to interpret the evolutionary relationships between organisms. The basic principle of genome comparison is that if two species share a common feature, it is likely encoded by the DNA sequence conserved between both species. The advent of genome sequencing technologies in the late 20th century enabled scientists to understand the concept of conservation of domains between species and helped them to deduce evolutionary relationships across diverse...

Phylogenetic Trees

Phylogenetic Trees

Phylogenetic trees come in many forms. It matters in which sequence the organisms are arranged from the bottom to the top of the tree, but the branches can rotate at their nodes without altering the information. The lines connecting individual nodes can be straight, angled, or even curved.

Convergent Evolution

Convergent Evolution

Evolution shapes the features of organisms over time, ensuring that they are suited for the environments in which they live. Sometimes, selection pressure leads to the rise of similar but unrelated adaptations in organisms with no recent common ancestors, a process known as convergent evolution.

Speciation Rates

Speciation Rates

Time-Series Graph

Time-Series Graph

A time-series graph is a line graph with repeated measurements taken at successive intervals of time. It is also called a time series chart. To construct a time-series graph, one must look at both pieces of a paired data set. The horizontal axis is used to plot the time increments, and the vertical axis is used to plot the values of the variable that one is measuring. By using the axes in this way, each point on the graph will correspond to time and a measured quantity. The points on the graph...

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Related Experiment Video

Updated: Oct 18, 2025

Using Generative Art to Convey Past and Future Climate Transitions

Using Generative Art to Convey Past and Future Climate Transitions

Published on: March 31, 2023

EvoLaps: a web interface to visualize continuous phylogeographic reconstructions.

François Chevenet^1,2, Denis Fargette³, Stéphane Guindon⁴

¹MIVEGEC, IRD, CNRS, Université de Montpellier, Montpellier, France. francois.chevenet@ird.fr.

BMC Bioinformatics

|September 28, 2021

Summary

This summary is machine-generated.

EvoLaps is a new web tool that simplifies visualizing pathogen spread and evolution. It offers user-friendly interfaces and transition diagrams for easier interpretation of complex phylogeographic data.

Keywords:

Ancestral character states Data visualization Evolutionary scenario Phylogeography

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Published on: December 7, 2021

Area of Science:

Evolutionary biology
Computational biology
Epidemiology

Background:

Phylogeographic reconstructions are crucial for understanding pathogen spread and evolution.
Current visualization methods for phylogeographic data are often complex and difficult to interpret.

Purpose of the Study:

To develop a user-friendly web interface for visualizing phylogeographic reconstructions.
To simplify the interpretation of evolutionary scenarios based on continuous phylogeographic data.

Main Methods:

Developed EvoLaps, a web-based tool for phylogeographic data visualization.
Utilized latitude/longitude coordinates for analysis with various clustering levels.
Incorporated transition diagrams for summarizing reconstruction data.

Main Results:

EvoLaps provides an intuitive interface for visualizing phylogeographic reconstructions.
The tool generates transition diagrams that offer concise summaries of evolutionary pathways.
EvoLaps integrates existing numerical and graphical methods into a cohesive platform.

Conclusions:

EvoLaps enhances the visualization and interpretation of continuous phylogeographic reconstructions.
The tool facilitates the study of evolutionary scenarios and pathogen dissemination.
EvoLaps is freely accessible online at www.evolaps.org.