Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Evolutionary Relationships through Genome Comparisons02:54

Evolutionary Relationships through Genome Comparisons

6.4K
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...
6.4K
Gene Evolution - Fast or Slow?02:05

Gene Evolution - Fast or Slow?

7.5K
The genomes of eukaryotes are punctuated by long stretches of sequence which do not code for proteins or RNAs. Although some of these regions do contain crucial regulatory sequences, the vast majority of this DNA serves no known function. Typically, these regions of the genome are the ones in which the fastest change, in evolutionary terms, is observed, because there is typically little to no selection pressure acting on these regions to preserve their sequences.
In contrast, regions which code...
7.5K
Phylogeny01:23

Phylogeny

54.2K
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.
54.2K
Phylogenetic Trees03:21

Phylogenetic Trees

48.0K
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.
48.0K
Mechanistic Models: Compartment Models in Algorithms for Numerical Problem Solving01:29

Mechanistic Models: Compartment Models in Algorithms for Numerical Problem Solving

116
Mechanistic models play a crucial role in algorithms for numerical problem-solving, particularly in nonlinear mixed effects modeling (NMEM). These models aim to minimize specific objective functions by evaluating various parameter estimates, leading to the development of systematic algorithms. In some cases, linearization techniques approximate the model using linear equations.
In individual population analyses, different algorithms are employed, such as Cauchy's method, which uses a...
116

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same authorSame journal

Traditional characters and Procrustes-aligned landmark data: a sensitivity analysis in morphological data type weighting for phylogenetic analyses.

Cladistics : the international journal of the Willi Hennig Society·2026
Same author

Some considerations about Cotton and Wilkinson's "majority rule supertrees".

Cladistics : the international journal of the Willi Hennig Society·2026
Same author

When Shape, Size, and Time Meet: Phylogenetic Analysis of the Evolution of Embryonic Shape Ontogeny in Physalaemus (Anura: Leptodactylidae).

Evolution & development·2026
Same author

Analysis of alternative homologies with parsimony and step-matrix recoding.

Cladistics : the international journal of the Willi Hennig Society·2026
Same author

Phylogenetic Analysis of Characters with Dependencies under Maximum Likelihood.

Systematic biology·2025
Same author

PlaceMyFossils: An Integrative Approach to Analyze and Visualize the Phylogenetic Placement of Fossils Using Backbone Trees.

Systematic biology·2025

Related Experiment Video

Updated: Oct 8, 2025

Dissection, MicroCT Scanning and Morphometric Analyses of the Baculum
04:32

Dissection, MicroCT Scanning and Morphometric Analyses of the Baculum

Published on: March 19, 2017

7.7K

Phylogenetic morphometrics (II): algorithms for landmark optimization.

Pablo A Goloboff1,2, Santiago A Catalano1,3

  • 1Consejo Nacional de Investigaciones Científicas y Técnicas, Miguel Lillo 251, 4000 S.M. de Tucumán, Argentina.

Cladistics : the International Journal of the Willi Hennig Society
|December 31, 2021
PubMed
Summary
This summary is machine-generated.

This study presents algorithms for directly optimizing landmark data onto phylogenetic trees. The method uses grid-based approximations and iterative refinement for accurate placement.

More Related Videos

Quantification of Orofacial Phenotypes in Xenopus
09:26

Quantification of Orofacial Phenotypes in Xenopus

Published on: November 6, 2014

9.9K
Author Spotlight: Three-Dimensional Cephalometric Landmark Annotation Demonstration on Human Cone Beam Computed Tomography Scans
10:23

Author Spotlight: Three-Dimensional Cephalometric Landmark Annotation Demonstration on Human Cone Beam Computed Tomography Scans

Published on: September 8, 2023

3.2K

Related Experiment Videos

Last Updated: Oct 8, 2025

Dissection, MicroCT Scanning and Morphometric Analyses of the Baculum
04:32

Dissection, MicroCT Scanning and Morphometric Analyses of the Baculum

Published on: March 19, 2017

7.7K
Quantification of Orofacial Phenotypes in Xenopus
09:26

Quantification of Orofacial Phenotypes in Xenopus

Published on: November 6, 2014

9.9K
Author Spotlight: Three-Dimensional Cephalometric Landmark Annotation Demonstration on Human Cone Beam Computed Tomography Scans
10:23

Author Spotlight: Three-Dimensional Cephalometric Landmark Annotation Demonstration on Human Cone Beam Computed Tomography Scans

Published on: September 8, 2023

3.2K

Area of Science:

  • Computational Biology
  • Phylogenetics
  • Data Optimization

Background:

  • Phylogenetic trees are crucial for understanding evolutionary relationships.
  • Accurate placement of landmark data onto these trees is essential for robust analyses.
  • Existing methods may lack efficiency or direct applicability to landmark data.

Purpose of the Study:

  • To develop and describe novel algorithms for direct optimization of landmark data onto phylogenetic trees.
  • To provide an efficient and accurate method for landmark data placement in phylogenetic analysis.
  • To detail the implementation and demonstrate the utility of the proposed algorithms.

Main Methods:

  • Development of algorithms for direct optimization of 2D and 3D landmark data.
  • Utilizing a grid-based approach for initial approximation of landmark positions.
  • Employing iterative refinement techniques to enhance the accuracy of point estimates.
  • Implementation details and empirical validation of the algorithms.

Main Results:

  • Successful development of algorithms for direct landmark data optimization onto trees.
  • Demonstration of the method's effectiveness through an empirical example.
  • The algorithms provide accurate and efficient placement of landmark data.

Conclusions:

  • The proposed algorithms offer a direct and effective solution for optimizing landmark data onto phylogenetic trees.
  • This method enhances the precision of phylogenetic analyses involving landmark data.
  • The study contributes a valuable computational tool for evolutionary biology research.