ABSTRACT

Among the most important innovations in the history of life is the transition from single-celled organisms to more complex, multicellular organisms. Multicellularity has evolved repeatedly across the tree of life, resulting in the evolution of new kinds of organisms that collectively constitute a significant portion of Earth’s biodiversity and have transformed the biosphere. This volume examines the origins and subsequent evolution of multicellularity, reviewing the types of multicellular groups that exist, their evolutionary relationships, the processes that led to their evolution, and the conceptual frameworks in which their evolution is understood. This important volume is intended to serve as a jumping-off point, stimulating further research by summarizing the topics that students and researchers of the evolution of multicellularity should be familiar with, and highlighting future research directions for the field.

Chapter 13 of this book is freely available as a downloadable Open Access PDF at https://www.taylorfrancis.com under a Creative Commons Attribution-Non Commercial-No Derivatives (CC-BY-NC-ND) 4.0 license.

chapter 1|6 pages

Introduction

The Evolution of Multicellularity in Context

part Section 2|84 pages

Aggregative Multicellularity

chapter 725|16 pages

Eukaryote Aggregative Multicellularity

Phylogenetic Distribution and a Case Study of Its Proximate and Ultimate Cause in Dictyostelia

chapter 6|22 pages

Group Formation

On the Evolution of Aggregative Multicellularity

chapter 8|20 pages

Group Transformation

Fruiting Body and Stalk Formation

part Section 3|94 pages

Clonal Multicellularity

chapter 10|20 pages

Group Formation

Hypotheses for the Evolution of Clonal Multicellularity

chapter 11|20 pages

Group Maintenance in Clonal Multicellularity

Controlling Intra-organismal Evolution

chapter 12|22 pages

Group Transformation

Life History Trade-offs, Division of Labor, and Evolutionary Transitions in Individuality

part Section 5|16 pages

Synthesis and Conclusions

chapter 35818|14 pages

Conclusion

The Future of Multicellularity Research