Cheats as first propagules: A new hypothesis for the evolution of individuality during the transition from single cells to multicellularity

The emergence of individuality during the evolutionary transition from single cells to multicellularity poses a range of problems. A key issue is how variation in lower-level individuals generates a corporate (collective) entity with Darwinian characteristics. Of central importance to this process i...

Full description

Saved in:
Bibliographic Details
Published in:BioEssays 2010-10, Vol.32 (10), p.872-880
Main Authors: Rainey, Paul B, Kerr, Benjamin
Format: Article
Language:English
Subjects:
biological complexity
Biological Evolution
Cell Division
conflict
cooperation
experimental evolution
Germ Cells
Models, Genetic
multi-level selection
Reproduction
Selection, Genetic
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The emergence of individuality during the evolutionary transition from single cells to multicellularity poses a range of problems. A key issue is how variation in lower-level individuals generates a corporate (collective) entity with Darwinian characteristics. Of central importance to this process is the evolution of a means of collective reproduction, however, the evolution of a means of collective reproduction is not a trivial issue, requiring careful consideration of mechanistic details. Calling upon observations from experiments, we draw attention to proto-life cycles that emerge via unconventional routes and that transition, in single steps, individuality to higher levels. One such life cycle arises from conflicts among levels of selection and invokes cheats as a primitive germ line: it lays the foundation for collective reproduction, the basis of a self-policing system, the selective environment for the emergence of development, and hints at a plausible origin for a soma/germ line distinction.
ISSN:0265-9247
1521-1878
DOI:10.1002/bies.201000039