NS3310 Dr. Brad Hoge Scientific Theory. How is Science Done? Camanicules.
NS3310 - Physical Science Studies Evolution. What is the history of life on earth? How has life...
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NS3310 - Physical Science Studies
Evolution
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KEY QUESTIONS
What is the history of life on earth?
How has life evolved?
What is the theory of Evolution?
What are the facts?
How does this relate to earth’s history?
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HISTORICAL PERSPECTIVE Plato
Plato’s Ideal
AristotleScala naturaeFuture Causes
The Chain of Being
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THE LONG ROAD TO RECOVERY Linnaeus
taxonomy Hutton
gradualism Lamarck
evolution Malthus
populations Cuvier
extinction Lyell
uniformitarianism
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DARWIN Voyage of the Beagle
Origin of Species
WallaceNatural Selection
Mendel
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NATURAL SELECTION AND ADAPTATION Species Fecundity
Stable Populations
Environmental Resources are Limited
Struggle for Survival
Variation within Populations
Differential Survivability
Successful Traits Accumulate
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PATTERNS OF EVOLUTION Homology
Vestigial Traits
Biogeography
The Fossil Record
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MODERN SYNTHESIS Theodosius Dobzhansky
Sewell Wright
Watson and Crick
Ernst Mayr
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POPULATION GENETICS Population
Gene Pool
Hardy-Weinberg Equilibrium
p2 + 2pq + q2 = 1
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MICROEVOLUTION Natural Selection
Genetic Drift
Bottleneck Effect
Founder Effect
Mutation
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VARIATION Variation Within
Populations Polymorphism Gene diversity Nucleotide diversity
Variation Between Populations Geographic variation Sexual recombination
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FITNESS Optima
Relative Fitness
SelectionDirectional selectionDiversifying selectionStabilizing selection
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LEVEL OF SELECTION Gene selection
Species selection
Population selection
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SEXUAL SELECTION Sexual dimorphism
Mate Choice
Competition
The Ant and the Peacock
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PERFECTION Evolution is limited by history
Adaptations is limited by survivability
There are no future causes
Chance happens
Not all change is good
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MACROEVOLUTION Biological Species Concept
Ecological Species Concept
Pluralistic Species Concept
Morphological Species Concept
Genealogical Species Concept
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GENETIC ISOLATION Anagenesis
Cladogenesis
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PREZYGOTIC ISOLATION Habitat isolation
Behavioral isolation
Temporal isolation
Mechanical isolation
Gametic isolation
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SPECIATION Allopatric Speciation
Sympatic Speciation
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EXAMPLES OF SPECIATION Ring Species
Adaptive Radiation on Island Chains
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RATES OF SPECIATION Gradualism
Catastrophism
Punctuated Equilibrium
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THE ROLE OF DEVELOPMENT Allometric Growth
Heterochrony
Paedomorphosis
Homeotic Genes
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RATES OF MUTATION Genetic Clocks
Mitochondrial DNA
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RELATEDNESS Morphology
Genetics
Phylogentics
Molecular Clocks
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CLADISTICS Tree Clade
Monophyletic Groups Shared primitive
characteristics Shared derived
characteristics Outgroups
Parsimony
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HUMANS
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TO BE HUMAN Brain Size
Jaw Shape
Bipedal Posture
Reduced Dimorphism
Social Structure
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KEY CONCEPTS Life has evolved.
Adaptations occur through natural selection.
Variation of traits allows for adaptation.
Variation is maintained through sexual reproduction, genetic drift, mutation and other factors.
New species can arise as changes in traits due to adaptations accumulate.
The tree of life shows the history of evolution.
The theory of evolution is the unifying theory of biology.
“Nothing in biology makes sense without Evolution.”Theodosius Dobszhansky