A5080013862- Evolution and Genetic Dynamics
- Evolutionary Game Theory and Cooperation
- Plant and animal studies
- Algal biology and biofuel production
- Marine and coastal plant biology
- Origins and Evolution of Life
- Protist diversity and phylogeny
- Evolutionary Psychology and Human Behavior
- Biocrusts and Microbial Ecology
- Marine and coastal ecosystems
- Philosophy and History of Science
- CRISPR and Genetic Engineering
- DNA Repair Mechanisms
- Photosynthetic Processes and Mechanisms
- Insect and Arachnid Ecology and Behavior
- Mathematical and Theoretical Epidemiology and Ecology Models
- Marine Biology and Ecology Research
- Aquatic Ecosystems and Phytoplankton Dynamics
- Microbial Community Ecology and Physiology
- Evolution and Science Education
- Micro and Nano Robotics
- Genetically Modified Organisms Research
- Genetics, Aging, and Longevity in Model Organisms
- Animal Behavior and Reproduction
- Plant Reproductive Biology
University of Arizona
2015-2025
University of California, Santa Barbara
2016
Applied Mathematics (United States)
2006
University of California, Irvine
2006
International Institute for Applied Systems Analysis
2000
U.S. National Science Foundation
1997
Princeton University
1997
Université Paris Cité
1994
The Ohio State University
1992
Evolutionary Genomics (United States)
1988
Preface Acknowledgments CHAPTER 1 The Language of Selection Plan the Book Darwinian Dynamics Major Evolutionary Transitions Cooperation and Conflict Fisherian Fitness Deconstructing as Covariance Mathematical Models Adequacy Criterion for Understanding Definitions Basic Concepts 2 Origin Complementarity Spontaneous Creation Self-Replication Replicator Design Analysis Molecular Life History Evolution Survival Fittest Anybody Overview 3 First Individuals Gene Networks Are Inherently Nonlinear...
A life-history model from the literature (Schaffer 1974; Charlesworth and Leon 1976) is extended to study relationship of evolution age-specific mortality factors. It shown that an increase in during one age class (j) selects for reproductive effort before a decrease after afflicted class. However, density dependence classes subsequent j could lead these ages. also leads greatest proportionate withdrawal value those adult plagued by new Hence, commonly observed inverse between provided with...
Species distribution models (SDMs) are numerical tools that combine observations of species occurrence or abundance with environmental estimates. They used to gain ecological and evolutionary insights predict distributions across landscapes, ...Read More
Individuality is a complex trait, yet series of stages each advantageous in itself can be shown to exist allowing evolution get from unicellular individuals multicellular individuals. We consider several the key involved this transition: initial advantage group formation, origin reproductive altruism within group, and further specialization cell types as groups increase size. How do become individuals? This central question we address. Our hypothesis that fitness tradeoffs drive transition...
Evolutionary transitions in individuality (ETIs) underlie the watershed events history of life on Earth, including origins cells, eukaryotes, plants, animals, and fungi. Each these constitutes an increase level complexity, as groups individuals become their own right. Among best-studied ETIs is origin multicellularity green alga Volvox , a model system for evolution cellular differentiation. Since its divergence from unicellular ancestors, has evolved into highly integrated multicellular...
Journal Article EVOLUTION OF COMPLEXITY IN THE VOLVOCINE ALGAE: TRANSITIONS INDIVIDUALITY THROUGH DARWIN'S EYE Get access Matthew D. Herron, Herron Department of Ecology and Evolutionary Biology, University Arizona, Tucson, AZ 85721E‐mail: mherron@email.arizona.edu Search for other works by this author on: Oxford Academic Google Scholar Richard E. Michod 85721 Evolution, Volume 62, Issue 2, 1 February 2008, Pages 436–451, https://doi.org/10.1111/j.1558-5646.2007.00304.x Published: 01 2008...
The transition to multicellularity has occurred numerous times in all domains of life, yet its initial steps are poorly understood. volvocine green algae a tractable system for understanding the genetic basis including formation cooperative cell groups. Here we report genome sequence undifferentiated colonial alga, Gonium pectorale, where group evolved by co-option retinoblastoma cycle regulatory pathway. Significantly, expression regulator unicellular Chlamydomonas causes it become...
The basic problem in an evolutionary transition is to understand how a group of individuals becomes new kind individual, possessing the property heritable variation fitness at level organization. During transition, for example, from single cells multicellular organisms, higher-level unit (multicellular organism) gains its emergent properties by virtue interactions among lower-level units (cells). We see formation cooperative as necessary step transitions; only cooperation transfers lower...
Benefits, costs, and requirements accompany the transition from motile totipotent unicellular organisms to multicellular having cells specialized into reproductive (germ) vegetative (sterile soma) functions such as motility. In flagellated colonial volvocalean green algae, organized beating by somatic cells' flagella yields propulsion important in phototaxis chemotaxis. It has not been generally appreciated that for larger colonies flagellar stirring of boundary layers remote transport are...
Abstract The purpose of the work reported here is to test hypothesis that natural genetic transformation in bacterium Bacillus subtilis has evolved as a DNA repair system. Specifically, tests were made determine whether functions provide template for bacteria] cell use recombinational repair. survivorship and homologous rate function dose ultraviolet irradiation (UV) was studied two experimental treatments, which cells either transformed before (DNA-UV), or after (UV-DNA), treatment with UV....
We have proposed that sexual reproduction arose in evolution as a DNA repair process which allowed damage one chromosome to be repaired by the information another homologous chromosome, and has retained this advantage throughout evolution. Since required two chromosomes present common cytoplasm, additional ways were evolved take of redundant available. The diploid stage cycle was probably transient early organisms, but began on more significant role genome size increased, since it provided...
This article studies the transition in evolution from cells to multicellular organisms. The issues considered are applicable all major transitions units of that share two themes: emergence cooperation and regulation conflict among lower-level units, this case, cells. Explicit genetic models mutation selection both within between organisms studied sexual asexual haploid diploid without a germ line. results may be understood terms differing opportunities for within- between-organism under...
Evolutionary transitions in the units of selection require promotion cooperation and regulation conflict among lower level units. For multicellular organisms to emerge as a new unit selection, selfish tendencies their component cells had be controlled. Theoretical results indicate may regulate this internal competition several ways: by reducing somatic mutation rate, sequestering germ line directly benefits cell defecting.
Transforming our understanding of life is the realization that evolution occurs not only among individuals within populations but also through integration groups preexisting into a new higher-level individual, is, evolutionary transitions in individuality. During (such as during origin gene networks, bacteria-like cells, eukaryotic multicellular organisms, and societies), fitness must be reorganized; specifically, it transferred from lower- to units partitioned lower-level specialize...