Jove
Visualize
Contáctanos
JoVE
x logofacebook logolinkedin logoyoutube logo
ACERCA DE JoVE
Visión GeneralLiderazgoBlogCentro de Ayuda JoVE
AUTORES
Proceso de PublicaciónConsejo EditorialAlcance y PolíticasRevisión por ParesPreguntas FrecuentesEnviar
BIBLIOTECARIOS
TestimoniosSuscripcionesAccesoRecursosConsejo Asesor de BibliotecasPreguntas Frecuentes
INVESTIGACIÓN
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchivo
EDUCACIÓN
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualCentro de Recursos para ProfesoresSitio de Profesores
Términos y Condiciones de Uso
Política de Privacidad
Políticas

Videos de Conceptos Relacionados

Eukaryotic Evolution01:24

Eukaryotic Evolution

35.2K
The endosymbiont theory is the most widely accepted theory of eukaryotic evolution; however, its progression is still somewhat debated. According to the nucleus-first hypothesis, the ancestral prokaryote first evolved a membrane to enclose DNA and form the nucleus. Conversely, the mitochondria-first hypothesis suggests that the nucleus was formed after endosymbiosis of mitochondria.
Contrary to the endosymbiont theory, the eukaryote-first hypothesis proposes that the simpler prokaryotic and...
35.2K
Entropy within the Cell01:22

Entropy within the Cell

10.8K
A living cell's primary tasks of obtaining, transforming, and using energy to do work may seem simple. However, the second law of thermodynamics explains why these tasks are harder than they appear. None of the energy transfers in the universe are completely efficient. In every energy transfer, some amount of energy is lost in a form that is unusable. In most cases, this form is heat energy. Thermodynamically, heat energy is defined as the energy transferred from one system to another that...
10.8K
Cell Diversity01:13

Cell Diversity

3.3K
The concept of a cell started with microscopic observations of dead cork tissue by Robert Hooke in 1665. Hooke coined the term "cell" based on the resemblance of the small subdivisions in the cork to the rooms that monks inhabited, called cells. About ten years later, Antonie van Leeuwenhoek became the first person to observe the living and moving cells under a microscope. In the century that followed, the theory that cells represented the basic unit of life developed.
Multicellular...
3.3K
Binary Fission01:20

Binary Fission

56.1K
Fission is the division of a single entity into two or more parts, which regenerate into separate entities that resemble the original. Organisms in the Archaea and Bacteria domains reproduce using binary fission, in which a parent cell splits into two parts that can each grow to the size of the original parent cell. This asexual method of reproduction produces cells that are all genetically identical.
56.1K
The Evidence for Evolution02:55

The Evidence for Evolution

43.0K
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.
43.0K
Conditions on Early Earth02:06

Conditions on Early Earth

93.8K
Around 4 billion years ago, oceans began to condense on earth while volcanic eruptions released nitrogen, carbon dioxide, methane, ammonia, and hydrogen into the primordial atmosphere. However, organisms with the characteristics of life were not initially present on earth. Scientists have used experimentation to determine how organisms evolved that could grow, reproduce, and maintain an internal environment.
93.8K

También podría leer

Artículos Relacionados

Artículos vinculados a este trabajo por autores compartidos, revista y gráfico de citas.

Ordenar por
Same author

Rapid evolution of lncRNAs introduces novel regulatory inputs into ancestral cancer pathways.

Science advances·2026
Same author

Transforming the American Academy of Microbiology for social good through scientific portfolios.

mBio·2026
Same author

Metabolic inequality in microbial communities.

bioRxiv : the preprint server for biology·2026
Same author

Emergence of genetic sex determination in an environmentally sex-determined animal.

Proceedings of the National Academy of Sciences of the United States of America·2026
Same author

Biocontrol potential and molecular basis of predation in a marine raptorial ciliate.

The ISME journal·2026
Same author

A symbiotic origin of the ribosome?

PNAS nexus·2026
Same journal

Daily briefing: How cooperation built the world.

Nature·2026
Same journal

Deep-sea oddities and boatloads of other new species - June's best science images.

Nature·2026
Same journal

From cloning to gene-editing: the enduring legacy of Dolly the sheep.

Nature·2026
Same journal

Time to give hydration breaks the red card? What science says about keeping cool.

Nature·2026
Same journal

Universities are relying on AI-detection software to catch cheating. How well do the programs work?

Nature·2026
Same journal

Daily briefing: 'Cyborg' cockroaches breathe underwater with printed suit.

Nature·2026
Ver todos los artículos relacionados

Video Experimental Relacionado

Updated: Jul 24, 2025

Author Spotlight: Understanding Microbe Adaptation Using Innovative Techniques for Exploring Thermophilic Evolution
08:11

Author Spotlight: Understanding Microbe Adaptation Using Innovative Techniques for Exploring Thermophilic Evolution

Published on: June 14, 2024

822

Evolución de una célula mínima

R Z Moger-Reischer1, J I Glass2, K S Wise2

  • 1Department of Biology, Indiana University, Bloomington, IN, USA.

Nature
|July 5, 2023
PubMed
Resumen
Este resumen es generado por máquina.

Las células mínimas diseñadas, a pesar de los costos iniciales de aptitud, evolucionaron rápidamente para igualar y superar el rendimiento de sus contrapartes más grandes. La selección natural mejora rápidamente la aptitud de estos organismos simplificados.

Más Videos Relacionados

Procedure for Adaptive Laboratory Evolution of Microorganisms Using a Chemostat
06:03

Procedure for Adaptive Laboratory Evolution of Microorganisms Using a Chemostat

Published on: September 20, 2016

14.5K
Preparing Protein Producing Synthetic Cells using Cell Free Bacterial Extracts, Liposomes and Emulsion Transfer
09:37

Preparing Protein Producing Synthetic Cells using Cell Free Bacterial Extracts, Liposomes and Emulsion Transfer

Published on: April 27, 2020

11.1K

Videos de Experimentos Relacionados

Last Updated: Jul 24, 2025

Author Spotlight: Understanding Microbe Adaptation Using Innovative Techniques for Exploring Thermophilic Evolution
08:11

Author Spotlight: Understanding Microbe Adaptation Using Innovative Techniques for Exploring Thermophilic Evolution

Published on: June 14, 2024

822
Procedure for Adaptive Laboratory Evolution of Microorganisms Using a Chemostat
06:03

Procedure for Adaptive Laboratory Evolution of Microorganisms Using a Chemostat

Published on: September 20, 2016

14.5K
Preparing Protein Producing Synthetic Cells using Cell Free Bacterial Extracts, Liposomes and Emulsion Transfer
09:37

Preparing Protein Producing Synthetic Cells using Cell Free Bacterial Extracts, Liposomes and Emulsion Transfer

Published on: April 27, 2020

11.1K

Área de la Ciencia:

  • Biología sintética
  • Biología evolutiva
  • Microbiología

Sus antecedentes:

  • Las células mínimas, que poseen solo genes esenciales, ofrecen información sobre los procesos fundamentales de la vida.
  • La comprensión de la dinámica evolutiva en organismos simplificados es crucial para varias aplicaciones.

Objetivo del estudio:

  • Para comparar la trayectoria evolutiva de una célula mínima diseñada con su progenitor no mínimo.
  • Investigar el impacto de la minimización del genoma en las tasas de mutación, la aptitud y la adaptación.

Principales métodos:

  • Experimento de evolución comparativa entre una célula mínima sintética y Mycoplasma mycoides.
  • Monitoreo de las tasas de mutación, la aptitud, la tasa de crecimiento y el tamaño de la célula más de 2.000 generaciones.
  • Análisis de los objetivos genéticos y los efectos epistáticos, en particular las mutaciones en ftsZ.

Principales resultados:

  • Las células mínimas exhibieron altas tasas de mutación, comparables a otras bacterias, no afectadas por el tamaño del genoma.
  • La reducción inicial de la aptitud en las células mínimas se recuperó en 2.000 generaciones.
  • Las células mínimas evolucionaron un 39% más rápido en la aptitud relativa que las células no mínimas.
  • La evolución del tamaño celular se vio limitada en las células mínimas, a diferencia del aumento significativo en las células no mínimas, debido a las mutaciones ftsZ.

Conclusiones:

  • La selección natural mejora rápidamente la aptitud de las células mínimas diseñadas.
  • La racionalización del genoma presenta desafíos y restricciones evolutivas, particularmente con respecto a la morfología celular.
  • Las ideas sobre la evolución celular mínima informan la comprensión de los endosimbiontes, el chasis de la biotecnología y el refinamiento de las células sintéticas.