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

Radioactive Decay and Radiometric Dating02:48

Radioactive Decay and Radiometric Dating

39.7K
Radioactivity is a spontaneous disintegration of an unstable nuclide and is a random process, as all the nuclei in the sample do not decay simultaneously. The number of disintegrations per unit time is called the activity (A), which is directly proportional to the number of nuclei in the sample. The decay constant (λ) is an average probability of decay per nucleus in unit time.
39.7K
The Fossil Record02:56

The Fossil Record

28.3K
The fossil record documents only a small fraction of all organisms that have ever inhabited Earth. Fossilization is a rare process, and most organisms never become fossils. Moreover, the fossil record only exhibits fossils that have been discovered. Nevertheless, sedimentary rock fossils of long-lived, abundant, hard-bodied organisms dominate the fossil record. These fossils offer valuable information, such as an organism's physical form, behavior, and age. Studying the fossil record helps...
28.3K
Global Climate Change01:50

Global Climate Change

29.6K
Throughout its ~4.5 billion year history, the Earth has experienced periods of warming and cooling. However, the current drastic increase in global temperatures is well outside of the Earth’s cyclic norms, and evidence for human-caused global climate change is compelling. Paleoclimatology, the study of ancient climate conditions, provides ample evidence for human-caused global climate change by comparing recent conditions with those in the past.
29.6K
Speciation Rates01:07

Speciation Rates

23.4K
Overview
23.4K
The Evidence for Evolution02:55

The Evidence for Evolution

49.8K
Genetic variations accumulating within populations over generations give rise to biological evolution. Evolutionary changes can result in the formation of novel varieties and entire new species. These changes are responsible for the diverse forms of life inhabiting the planet. The evidence for evolution suggests that all living organisms descended from common ancestors.
49.8K
Distance Measurements by Taping01:18

Distance Measurements by Taping

596
Tapes are essential in surveying for accurate, durable, and short-distance measurements. Made from lightweight, nylon-coated steel, they offer flexibility and strength for rugged outdoor use. The nylon coating protects against rust and wear, extending the tape's life. Standard lengths, around 30 meters, are marked in meters and millimeters for precision.Surveyors select tapes based on site conditions and accuracy needs. Lightweight, nylon-coated tapes are commonly used for ease of handling and...
596

You might also read

Related Articles

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

Sort by
Same author

Why recombination hotspots?

PLoS genetics·2026
Same author

Empirical Validation of the Nearly Neutral Theory at Divergence and Population-Genomic Scales Using 144 Placental Mammal Genomes.

Genome biology and evolution·2026
Same author

Spatial overlap and temporal synchrony between guilds of insect hosts and parasitoids.

The Journal of animal ecology·2026
Same author

EMPIRICAL VALIDATION OF THE NEARLY NEUTRAL THEORY AT DIVERGENCE AND POPULATION GENOMIC SCALE USING 144 PLACENTAL MAMMALS GENOMES.

bioRxiv : the preprint server for biology·2025
Same author

Structural Mutations Set an Equilibrium Noncoding Genome Fraction.

Molecular biology and evolution·2025
Same author

HAPP: High-accuracy pipeline for processing deep metabarcoding data.

PLoS computational biology·2025

Related Experiment Video

Updated: Mar 19, 2026

Isolation of Quartz Grains for Optically Stimulated Luminescence OSL Dating of Quaternary Sediments for Paleoenvironmental Research
09:41

Isolation of Quartz Grains for Optically Stimulated Luminescence OSL Dating of Quaternary Sediments for Paleoenvironmental Research

Published on: August 2, 2021

3.6K

Closing the gap between rocks and clocks using total-evidence dating.

Fredrik Ronquist1, Nicolas Lartillot2, Matthew J Phillips3

  • 1Department of Bioinformatics and Genetics, Swedish Museum of Natural History, PO Box 50007, 104 05 Stockholm, Sweden fredrik.ronquist@nrm.se.

Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
|June 22, 2016
PubMed
Summary

Total-evidence dating (TED) can conflict between molecular and morphological data. Addressing model inadequacies, particularly for morphological data and fossil sampling, resolves deep root attraction and improves divergence time estimates.

Keywords:
deep root attractionfossilized birth–deathmammalstotal-evidence dating

More Related Videos

Author Spotlight: Alignment of Synchronized Time-Series Data Using the Characterizing Loss of Cell Cycle Synchrony Model for Cross-Experiment Comparisons
07:59

Author Spotlight: Alignment of Synchronized Time-Series Data Using the Characterizing Loss of Cell Cycle Synchrony Model for Cross-Experiment Comparisons

Published on: June 9, 2023

2.0K
Dendrochronological Dating and Provenancing of String Instruments
10:26

Dendrochronological Dating and Provenancing of String Instruments

Published on: October 6, 2022

3.3K

Related Experiment Videos

Last Updated: Mar 19, 2026

Isolation of Quartz Grains for Optically Stimulated Luminescence OSL Dating of Quaternary Sediments for Paleoenvironmental Research
09:41

Isolation of Quartz Grains for Optically Stimulated Luminescence OSL Dating of Quaternary Sediments for Paleoenvironmental Research

Published on: August 2, 2021

3.6K
Author Spotlight: Alignment of Synchronized Time-Series Data Using the Characterizing Loss of Cell Cycle Synchrony Model for Cross-Experiment Comparisons
07:59

Author Spotlight: Alignment of Synchronized Time-Series Data Using the Characterizing Loss of Cell Cycle Synchrony Model for Cross-Experiment Comparisons

Published on: June 9, 2023

2.0K
Dendrochronological Dating and Provenancing of String Instruments
10:26

Dendrochronological Dating and Provenancing of String Instruments

Published on: October 6, 2022

3.3K

Area of Science:

  • Evolutionary Biology
  • Paleontology
  • Computational Biology

Background:

  • Total-evidence dating (TED) integrates diverse data (molecular, morphological, fossil) for evolutionary analysis.
  • Discrepancies between molecular and morphological data can lead to inaccurate divergence time estimates.
  • This study investigates the causes of discordance in TED, termed 'deep root attraction' (DRA).

Purpose of the Study:

  • To explore the reasons for discordance between molecular and morphological data in TED.
  • To identify causes of deep root attraction (DRA) in divergence time estimation.
  • To propose methods for improving the accuracy and congruence of TED estimates.

Main Methods:

  • Analysis of a mammalian dataset incorporating molecular, morphological, and fossil information.
  • Evaluation of standard stochastic models and identification of model inadequacies.
  • Testing the impact of priors on diversification and fossil sampling rates.

Main Results:

  • Significant conflict exists between morphological and molecular data under standard models, causing DRA.
  • Inadequate morphological models, failing to account for character dependencies, are a major cause of DRA.
  • Adjusting priors for fossil sampling (e.g., penalizing ghost lineages) effectively mitigates DRA and aligns estimates with paleontological data.

Conclusions:

  • Deep root attraction is a significant issue in TED, driven by model limitations and data conflicts.
  • Improved morphological models and appropriate priors for fossil data are crucial for accurate divergence time estimation.
  • Fossils, when properly incorporated, stabilize and increase the precision of divergence time estimates.