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

Radius of Gyration of an Area01:12

Radius of Gyration of an Area

The second moment of area, also known as the moment of inertia of area, is a crucial factor in understanding an object's resistance against bending deformation, or stiffness. To accurately estimate the second moment of area along any axis, one needs to concentrate all areas associated with that object into a thin strip, which should be placed parallel to that particular axis.
Centroid of a Body01:16

Centroid of a Body

The centroid is an important concept in engineering, physics, and mechanics. It is the geometric center of a body. It always lies within the body except in cases with holes or cavities. When the material that a body is composed of is uniform or homogeneous, the centroid coincides with its center of mass or the center of gravity.
For a homogeneous body with constant density, the centroid can usually be found using equations representing a balance of the moments of the body's volume. If the...
Centroid of a Body: Problem Solving01:03

Centroid of a Body: Problem Solving

The centroid of a body is a crucial concept in engineering and physics. Finding the centroid of a body can help determine its stability, its balance point, and even its design. In this context, consider a thin wire bent in the form of a quarter circular arc. Polar coordinates are used to calculate the centroid. The wire is first divided into small differential elements of a length equal to the radius multiplied by the differential angle.
The x-coordinates and y-coordinates of each element's...
Topographic Surveying and Contours01:29

Topographic Surveying and Contours

Topographic surveying is critical for documenting the Earth's surface, focusing on capturing elevations, slopes, and natural and man-made features. It is essential in construction planning, water resource management, and land-use analysis. The primary outcome of such surveys is a topographic map, which uses contour lines to visually represent the shape and slope of the terrain, providing valuable insights into the landscape's characteristics.Contour lines are fundamental to understanding the...
Plotting and Calibrating the Root Locus01:19

Plotting and Calibrating the Root Locus

Root loci often diverge as system poles shift from the real axis to the complex plane. Key points in this transition are the breakaway and break-in points, indicating where the root locus leaves and reenters the real axis. The branches of the root locus form an angle of 180/n degrees with the real axis, where n is the number of branches at a breakaway or break-in point.
The maximum gain occurs at the breakaway points between open-loop poles on the real axis, while the minimum gain is observed...
Degree of Curvature and Radius of Curvature01:19

Degree of Curvature and Radius of Curvature

The degree of curvature and the radius of curvature are fundamental concepts in determining the sharpness or smoothness of a curve. The degree of curvature is a measure of how steeply a curve bends and can be determined using the chord basis or the arc basis. In the chord basis method, the degree of curvature is defined as the central angle subtended by a chord of 30.48 meters, helping in the calculation of the radius of the curve. The arc basis method defines the degree of curvature as the...

You might also read

Related Articles

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

Sort by
Same author

Schwann Cell-Secreted S100B Promotes Wound Healing via Paracrine Modulation.

Journal of dental research·2024
Same author

[Dynamic monitoring and esthetic evaluation of dimensional changes in the peri-implant soft tissue contour after the immediate implant placement and provisionalization with the modified socket-shield technique in the esthetic zone].

Zhonghua kou qiang yi xue za zhi = Zhonghua kouqiang yixue zazhi = Chinese journal of stomatology·2024
Same author

[Placental transmogrification of lung: clinicopathological features of three cases].

Zhonghua bing li xue za zhi = Chinese journal of pathology·2024
Same author

[Protective effects of total saponins from <i>Panax</i> <i>japonicus</i> against high-fat diet-induced testicular Sertoli cell junction damage in mice].

Nan fang yi ke da xue xue bao = Journal of Southern Medical University·2023
Same author

[Pediatric myofibroma/myofibromatosis of the soft tissue and bone: a clinicopathological analysis of 28 cases].

Zhonghua bing li xue za zhi = Chinese journal of pathology·2023
Same author

Proteome Analysis of Temporomandibular Joint with Disc Displacement.

Journal of dental research·2022
Same journal

Landscape genetics of the copal tree, Bursera cuneata (Burseraceae): the key role of the tropical dry forest in shaping connectivity at the regional scale.

Heredity·2026
Same journal

From Paleogene to Anthropocene: phylogeography, geographic patterns of traits, and chronology of evolutionary drivers in northeast Asian anurans.

Heredity·2026
Same journal

It is hard to be small: Inbreeding depression on male breeding success depends on body size in a threatened songbird.

Heredity·2026
Same journal

How precise are mutation rate estimates? Comparison of different approaches to estimate de novo mutation rates.

Heredity·2026
Same journal

Insights from farming Macrocystis pyrifera offshore: phenotypic analysis, genome-wide association studies, genomic selection.

Heredity·2026
Same journal

Genomic prediction of wild-derived powdery mildew resistance for strawberry (Fragaria × ananassa) pre-breeding.

Heredity·2026
See all related articles

Related Experiment Video

Updated: May 12, 2026

Three-Dimensional Shape Modeling and Analysis of Brain Structures
05:33

Three-Dimensional Shape Modeling and Analysis of Brain Structures

Published on: November 14, 2019

Mapping shape quantitative trait loci using a radius-centroid-contour model.

G Fu1, W Bo, X Pang

  • 1Center for Computational Biology, Beijing Forestry University, China.

Heredity
|April 11, 2013
PubMed
Summary
This summary is machine-generated.

Researchers developed a new statistical model for quantitative trait loci (QTL) mapping of shape variation. This method identifies genes controlling biological shape, advancing our understanding of genetics in plants, animals, and humans.

More Related Videos

Quantification of Orofacial Phenotypes in Xenopus
09:26

Quantification of Orofacial Phenotypes in Xenopus

Published on: November 6, 2014

Related Experiment Videos

Last Updated: May 12, 2026

Three-Dimensional Shape Modeling and Analysis of Brain Structures
05:33

Three-Dimensional Shape Modeling and Analysis of Brain Structures

Published on: November 14, 2019

Quantification of Orofacial Phenotypes in Xenopus
09:26

Quantification of Orofacial Phenotypes in Xenopus

Published on: November 6, 2014

Area of Science:

  • Genetics and Evolutionary Biology
  • Biostatistics
  • Quantitative Trait Locus (QTL) Mapping

Background:

  • Organ shape is a predictor of structural-functional relationships, especially in changing environments.
  • Understanding the genetic basis of shape variation is crucial but limited by a lack of appropriate mapping tools.

Purpose of the Study:

  • To develop a novel statistical model for mapping quantitative trait loci (QTLs) that control biological shape.
  • To enable the identification of genes underlying shape variation in natural populations.

Main Methods:

  • Integrated shape analysis principles with mixture-model-based likelihood for QTL mapping.
  • Utilized Procrustes analysis for shape alignment and radius-centroid-contour (RCC) curves for quantitative shape representation.
  • Applied principal component (PC) analysis to reduce dimensionality and treat PC axes as phenotypic traits for QTL mapping.

Main Results:

  • Successfully mapped quantitative trait loci (QTLs) associated with global and local leaf shape variation in a natural population of Populus szechuanica var tibetica.
  • Validated the model's effectiveness in identifying genes that determine biological shape.

Conclusions:

  • The developed statistical model offers a powerful new tool for genetic analysis of shape variation.
  • This approach has broad applicability for understanding the genetic architecture of shape in diverse organisms, including plants, animals, and humans.