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The evolution of self during the transition to multicellularity
1Biology Department, University of New Brunswick, Fredericton, New Brunswick, Canada. anedelcu@unb.ca
Advances in Experimental Medicine and Biology
|March 9, 2012
Summary
Evolutionary transitions create new individuals from simpler entities. The volvocine algae model explains how multicellularity arises from cellular interactions and adaptations.
Area of Science:
- Evolutionary biology
- Developmental biology
- Cellular biology
Background:
- The concept of 'self' is tied to identity and individuality.
- Evolutionary transitions create new individuals from simpler entities.
- Examples include the origin of cells and multicellularity.
Purpose of the Study:
- To investigate how new higher-level individuals emerge from simpler parts.
- To understand the evolution of individuality during the transition to multicellularity.
- To use volvocine green algae as a model system.
Main Methods:
- Reviewing a framework for studying the evolution of individuality.
- Focusing on the reorganization of life-traits and cellular processes.
- Examining the co-option of environmentally-induced responses.
Main Results:
- New individuals can arise from the interaction of previously independent entities.
- The transition to multicellularity involves reorganizing life-traits and cellular processes.
- Environmental responses are co-opted during this transition.
Conclusions:
- The study provides a framework for understanding the evolution of individuality.
- Volvocine algae serve as a valuable model for studying multicellularity.
- The emergence of higher-level individuals is a key evolutionary process.
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