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Related Concept Videos

Phylogeny01:23

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...
Phylogenetic Trees03:21

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.The length of the branches can depict time or the relative amount of change among organisms. For instance, the branch length might indicate the number of amino acid changes in the sequence that underlies the...
Phylogenetic Trees03:21

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.The length of the branches can depict time or the relative amount of change among organisms. For instance, the branch length might indicate the number of amino acid changes in the sequence that underlies the...
Evolutionary Relationships through Genome Comparisons02:54

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...
Applications of Molecular Taxonomy01:20

Applications of Molecular Taxonomy

Molecular taxonomy has revolutionized the understanding and classification of bacteria, providing precise insights into their diversity, evolutionary relationships, and ecological roles. By utilizing molecular techniques such as DNA sequencing and fingerprinting, researchers have made significant strides in various fields related to bacterial studies.Resolving Taxonomic AmbiguitiesMolecular taxonomy has been instrumental in distinguishing closely related bacterial species initially thought to...
Modern Molecular Taxonomy01:29

Modern Molecular Taxonomy

Advancements in molecular biology have revolutionized the identification and characterization of bacteria, with multiple methods leveraging DNA sequencing for enhanced precision. As sequencing technologies improve and costs decline, these approaches are increasingly used in clinical, environmental, and evolutionary studies.Multilocus Sequence Typing (MLST) examines several housekeeping genes, essential chromosomal genes encoding cellular functions, to distinguish strains. Approximately...

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Using Phylogenetic Analysis to Investigate Eukaryotic Gene Origin
08:57

Using Phylogenetic Analysis to Investigate Eukaryotic Gene Origin

Published on: August 14, 2018

Jane: a new tool for the cophylogeny reconstruction problem.

Chris Conow1, Daniel Fielder, Yaniv Ovadia

  • 1Department of Computer Science, California State Polytechnic University, Pomona, CA, USA.

Algorithms for Molecular Biology : AMB
|February 26, 2010
PubMed
Summary

Jane is a new software tool that reconciles pairs of trees to study historical associations in fields like parasitology. It uses dynamic programming and genetic algorithms to find optimal solutions for complex cophylogenetic reconstruction problems.

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Area of Science:

  • Evolutionary biology
  • Bioinformatics
  • Computational biology

Background:

  • The study of historical associations is crucial in fields like parasitology, molecular systematics, and biogeography.
  • Reconciling pairs of trees, considering biologically plausible events and costs, is a fundamental challenge.
  • Existing software tools have limitations, necessitating new approaches for cophylogenetic analysis.

Purpose of the Study:

  • To introduce Jane, a novel software tool designed for the analysis of historical associations by reconciling phylogenetic trees.
  • To provide a user-friendly interface for researchers to explore and modify solutions for cophylogenetic reconstruction.

Main Methods:

  • Jane employs a combination of polynomial time dynamic programming and a genetic algorithm.
  • The software allows for the incorporation of detailed timing information for host and parasite trees.
  • Users can define constraints such as host switch distance and region-specific host switch costs.

Main Results:

  • Jane efficiently finds highly accurate, often optimal, solutions for large tree pairs.
  • The tool facilitates interactive exploration and modification of cophylogenetic reconstructions through its graphical user interface.
  • Rich timing and cost information can be integrated into the analysis.

Conclusions:

  • Jane is a valuable tool for cophylogenetic reconstruction, complementing existing software.
  • Its advanced functionalities are expected to benefit researchers in parasitology, molecular systematics, and biogeography.
  • The software enhances the study of evolutionary relationships and historical associations between biological entities.