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Related Concept Videos

Cell Diversity01:13

Cell Diversity

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 organisms...
Diversity in Cell Signaling Responses01:22

Diversity in Cell Signaling Responses

The physiological function of a cell and cellular communication are outcomes of a range of extrinsic signals, intracellular signaling pathways, and cellular responses. No two cell types express the same repertoire of signaling components. Receptors are highly selective for their cognate ligands, but once activated, they can alter multiple cellular processes such as DNA transcription, protein synthesis, and metabolic activity. 
Graded and Abrupt Responses
Some signaling systems generate...
The Evidence for Evolution02:55

The Evidence for Evolution

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.
Synteny and Evolution02:31

Synteny and Evolution

John H. Renwick first coined the term “synteny” in 1971, which refers to the genes present on the same chromosomes, even if they are not genetically linked. The species with common ancestry tend to show conserved syntenic regions. Therefore, the concept of synteny is nowadays used to describe the evolutionary relationship between species.
Around 80 million years ago, the human and mice lineages diverged from the common ancestor. During the course of evolution, the ancestral chromosome underwent...
Evolution of New Traits in Microbes01:24

Evolution of New Traits in Microbes

Microorganisms evolve rapidly due to their large population sizes and short generation times, often exhibiting measurable changes within days under laboratory conditions. Natural selection acts on standing genetic variation, enabling the retention and amplification of beneficial traits that confer fitness advantages in changing environments.Adaptive Pigment Regulation in RhodobacterIn Rhodobacter, a genus of purple non-sulfur bacteria, light-harvesting pigments such as bacteriochlorophyll and...
Diversity of Protists II01:27

Diversity of Protists II

Alveolates are a group of organisms recognized by the presence of alveoli, which are cytoplasmic sacs located beneath the cell membrane. While their function remains uncertain, alveoli may help regulate water balance by controlling how much water enters and leaves the cell. In dinoflagellates, these structures may serve as armor plates. There are three major types of alveolates: ciliates, which move using cilia; dinoflagellates, which use flagella for movement; and apicomplexans, which are...

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Related Experiment Video

Updated: May 20, 2026

Following the Dynamics of Structural Variants in Experimentally Evolved Populations
04:52

Following the Dynamics of Structural Variants in Experimentally Evolved Populations

Published on: February 3, 2023

Evolutionary cell biology: Lessons from diversity.

Frances M Brodsky1, Mukund Thattai, Satyajit Mayor

  • 1University of California, San Francisco, California 94143, USA. Frances.Brodsky@ucsf.edu

Nature Cell Biology
|June 30, 2012
PubMed
Summary
This summary is machine-generated.

Recent findings on eukaryotic cell origins reveal new insights from phylogenetics and population genetics. Evolutionary consequences of energy needs and host–pathogen interactions are key to understanding cell evolution.

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Area of Science:

  • Evolutionary Biology
  • Genetics
  • Cell Biology

Background:

  • The origin of eukaryotic cells remains a central question in evolutionary biology.
  • Understanding the transition from prokaryotic to eukaryotic life requires integrating diverse biological disciplines.

Framework:

  • A recent conference synthesized novel perspectives on eukaryotic cell origins.
  • Key areas discussed include phylogenetics, population genetics, and evolutionary consequences.

Implementation:

  • The conference explored the role of energy requirements in cellular evolution.
  • Host–pathogen interactions were examined for their impact on evolutionary trajectories.

Implications:

  • This integrated approach provides a more comprehensive understanding of eukaryotic cell evolution.
  • Future research can build upon these insights to further unravel the complexities of early life.