On Being the Right Size
Fall 15
On Being the Right Size and In the Right Place
or
Location, Location, Location
Don Reeder
PLATO 1
Genetics
Fall 15
First RNA life?
PLATO
Science 311(5765): 1283-7
2
Fall 15
Multicells
>46 tries for complexity some few bacteria mostly unsuccessful many times for green algae and land plants couple of times for animals once for brown algae three times for fungi a few times for slime molds and red algae
PLATO 3
How?
Cellurization: (needs example)
Unicellular organism developed multiple nuclei, then could have made membranes around each of them.
Symbiosis: (rare) combination of different unicellular species with different function became dependent on each other but replicated independently
Colonial theory: (currently favored)
Symbiosis of cells of the same species
Cells fail to separate after division
Fall 15
Advantages: larger size; specialization; longer life
Problems: back to unicell; cancer, need more food
PLATO 4
Arc of Evolution
Timeline
Fall 15 PLATO 5
Cambrian Explosion
Fall 15 PLATO Science 341 (1355) 6
Terrestrial Ecological Niches
Fall 15 PLATO 7
Fall 15
Acquatic Biomes
Freshwater
Ponds and Lakes
Streams and Rivers
Wetlands
Marine
Oceans
Coral Reefs
Esturaries
8 PLATO
Fall 15
Relationships
Beyond adapting to geography
Predators
Competitors
Parasites
Synergistic/cooperative/social
Modulated by local environment.
PLATO 9
