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

Half-life of a Reaction02:42

Half-life of a Reaction

38.8K
The half-life of a reaction (t1/2) is the time required for one-half of a given amount of reactant to be consumed. In each succeeding half-life, half of the remaining concentration of the reactant is consumed. For example, during the decomposition of hydrogen peroxide, during the first half-life (from 0.00 hours to 6.00 hours), the concentration of H2O2 decreases from 1.000 M to 0.500 M. During the second half-life (from 6.00 hours to 12.00 hours), the concentration decreases from 0.500 M to...
38.8K
The Tree of Life - Bacteria, Archaea, Eukaryotes02:40

The Tree of Life - Bacteria, Archaea, Eukaryotes

38.1K
The “tree of life” describes the evolution of life and the evolutionary relationships between organisms. The root of the tree is the common ancestor to all life on Earth. All other species radiate from this point, much like the branches of a tree. The numerous tips of these branches on the tree of life represent every living, or extant, species. Extinct species, which are species that no longer exist, can be found towards the center of the tree. Currently, these organisms, both...
38.1K
Characteristics of Life01:23

Characteristics of Life

257.4K
Biology is a natural science that studies life and living organisms, including their structure, function, development, interactions, evolution, distribution, and taxonomy. The field's scope is extensive and divided into several specialized disciplines, such as anatomy, physiology, ethology, genetics, and many more. All living things share a few key traits, including cellular organization, heritable genetic material and the ability to adapt/evolve, metabolism to regulate energy needs, the...
257.4K
The Angiosperm Life Cycle02:39

The Angiosperm Life Cycle

72.2K
Plants have a life cycle split between two multicellular stages: a haploid stage—with cells containing one set of chromosomes—and a diploid stage—with cells containing two sets of chromosomes. The haploid stage is the gamete-producing gametophyte, and the diploid stage is the spore-producing sporophyte.
72.2K
Life Histories01:29

Life Histories

22.6K
Overview
22.6K
Three-Domain System of Life01:21

Three-Domain System of Life

958
Ribosomal RNA (rRNA) sequence analysis revealed three distinct groups of cells: eukaryotes, bacteria, and archaea. In 1978, Carl R. Woese proposed the concept of domains, a taxonomic level above kingdoms, to differentiate these groups. He suggested that archaea and bacteria, despite their similar appearance, represent separate domains. Domains differ in rRNA, membrane lipid structure, transfer RNA, and antibiotic sensitivity.In this classification, animals, plants, and fungi belong to the...
958

You might also read

Related Articles

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

Sort by
Same author

A quest for greater thermodynamic rigour in the quantitative characterization of protein self-association by direct assessment of sedimentation equilibrium distributions.

Biophysical reviews·2026
Same author

Correction to: A quest for greater thermodynamic rigour in the quantitative characterization of protein self-association by direct assessment of sedimentation equilibrium distributions.

Biophysical reviews·2026
Same author

Reduced Amino Acid Substitution Matrices Find Traces of Ancient Coding Alphabets in Modern Day Proteins.

Molecular biology and evolution·2025
Same author

Structural Enzymology, Phylogenetics, Differentiation, and Symbolic Reflexivity at the Dawn of Biology.

Genome biology and evolution·2025
Same author

Evolution is coupled with branching across many granularities of life.

Proceedings. Biological sciences·2025
Same author

Aminoacyl-tRNA synthetase urzymes optimized by deep learning behave as a quasispecies.

Structural dynamics (Melville, N.Y.)·2025

Related Experiment Video

Updated: Jan 24, 2026

Providing Meaningful Environmental Enrichment and Measuring Saliva Cortisol in Pigs Housed on Slatted Flooring
07:02

Providing Meaningful Environmental Enrichment and Measuring Saliva Cortisol in Pigs Housed on Slatted Flooring

Published on: September 30, 2019

7.6K

Life’s most distinguishing feature: meaningful information processing.

Peter R Wills1

  • 1Department of Physics & Te Ao Marama Centre for Fundamental Inquiry, University of Auckland, Auckland, New Zealand.

Theoretical Biology Forum
|May 16, 2019
PubMed
Summary

Life

Area of Science:

  • Origin of Life Studies
  • Molecular Biology
  • Information Theory in Biology

Background:

  • Life's origin from molecular disorder presents a challenge for current scientific language.
  • Shannon's syntactical measure is insufficient for understanding genetic information.
  • Biological systems require molecular-level explanations for meaning and self-construction.

Purpose of the Study:

  • To explore the role of genetic information in the origin and maintenance of life.
  • To understand how biological systems embed chemical representations in DNA.
  • To investigate the relationship between genetic information, meaning, and molecular machinery.

Main Methods:

  • Conceptual analysis of genetic information and molecular self-construction.
Keywords:
Aminoacyl-tRNA synthetaseAutocatalysisMeaningOrigin of codingReflexivitySemanticsShannon information

More Related Videos

Coulomb Explosion Imaging as a Tool to Distinguish Between Stereoisomers
08:51

Coulomb Explosion Imaging as a Tool to Distinguish Between Stereoisomers

Published on: August 18, 2017

10.9K
Detection of miRNA Targets in High-throughput Using the 3'LIFE Assay
12:49

Detection of miRNA Targets in High-throughput Using the 3'LIFE Assay

Published on: May 25, 2015

10.5K

Related Experiment Videos

Last Updated: Jan 24, 2026

Providing Meaningful Environmental Enrichment and Measuring Saliva Cortisol in Pigs Housed on Slatted Flooring
07:02

Providing Meaningful Environmental Enrichment and Measuring Saliva Cortisol in Pigs Housed on Slatted Flooring

Published on: September 30, 2019

7.6K
Coulomb Explosion Imaging as a Tool to Distinguish Between Stereoisomers
08:51

Coulomb Explosion Imaging as a Tool to Distinguish Between Stereoisomers

Published on: August 18, 2017

10.9K
Detection of miRNA Targets in High-throughput Using the 3'LIFE Assay
12:49

Detection of miRNA Targets in High-throughput Using the 3'LIFE Assay

Published on: May 25, 2015

10.5K
  • Application of information theory to biological systems.
  • Examination of the genetic code as a rule-based map of physical phenomena.

    • Main Results:

    • Genetic information acts as read-only memory, enabling cellular organization.
    • Genetic information constrains stochastic dynamics, facilitating self-construction.
    • The genetic code maps organismal chemistry, linking information to meaning.

    Conclusions:

    • The evolution of genetic coding is crucial for understanding life's self-representation.
    • Biological systems use genetic information to control molecular machinery and ensure existence.
    • Self-constructing semantic structures commandeer mechanical causation for biological persistence.