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Related Concept Videos

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...
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...
Multi-species Conserved Sequences02:51

Multi-species Conserved Sequences

Next-generation sequencing technologies have created large genomic databases of a variety of animals and plants. Ever since the human genome project was completed, scientists studied the genome of primates, mammals, and other phylogenetically distant living beings. Such large-scale  studies have provided new insights into the evolutionary relationship between organisms.
Although the genome of each species varies greatly from each other, a few sequences are highly conserved. Such conserved DNA...
Econometric Views (EViews)01:29

Econometric Views (EViews)

Econometric Views, often stylized as EViews, is a package that merges statistical analysis with econometric studies. It is designed to provide tools for time series analysis, forecasting, and econometric model simulation. The software originated from MicroTSP software and has evolved significantly since its inception in 1981. The history of EViews is marked by a continuous effort to enhance its computational speed and user interface. It was initially developed for large computing systems but...

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A Practical Guide to Phylogenetics for Nonexperts
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A Practical Guide to Phylogenetics for Nonexperts

Published on: February 5, 2014

SeaView version 4: A multiplatform graphical user interface for sequence alignment and phylogenetic tree building.

Manolo Gouy, Stéphane Guindon, Olivier Gascuel

    Molecular Biology and Evolution
    |October 27, 2009
    PubMed
    Summary
    This summary is machine-generated.

    SeaView version 4 is a free, multiplatform software for molecular sequence alignment and phylogenetic tree construction. It offers enhanced features for researchers and educators, simplifying complex analyses.

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    08:57

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    Area of Science:

    • Bioinformatics
    • Computational Biology
    • Molecular Evolution

    Background:

    • Phylogenetic analysis is crucial for understanding evolutionary relationships.
    • Existing tools often lack integrated features for alignment and tree building.
    • Molecular sequence data requires specialized software for accurate interpretation.

    Discussion:

    • SeaView version 4 integrates multiple alignment and phylogenetic tree construction.
    • It offers network access to sequence databases and alignment with arbitrary algorithms.
    • Maximum-likelihood tree building is facilitated using PhyML, enhancing analytical power.

    Key Insights:

    • The software combines functionalities of SeaView and Phylo_win, offering a comprehensive solution.
    • Graphical user interface simplifies complex bioinformatics tasks.
    • Free availability and multiplatform design increase accessibility for teaching and research.

    Outlook:

    • Further development could include integration of additional phylogenetic methods.
    • Enhanced visualization options for complex phylogenetic trees are desirable.
    • Community feedback can drive future improvements in SeaView's capabilities.