First Hour Conference Intraining Exam Review November 8, 2006
First Hour Exam
47
First Hour Exam Average: 79.8 Range: 38 - 99 Answer Sheet tells which ones you missed but doesn’t calculate your grade See the website to see your grade
description
First Hour Exam. Average: 79.8. Range: 38 - 99. Answer Sheet tells which ones you missed. but doesn’t calculate your grade. See the website to see your grade. http://life.uiuc.edu/animalbiology/105/. ID: eee105. Password: prAIRie. Lec 13 13Feb02. Evolution. - PowerPoint PPT Presentation
Transcript of First Hour Exam
First Hour Exam
Average: 79.8Range: 38 - 99
Answer Sheet tells which ones you missed but doesn’t calculate your grade
See the website to see your grade
Evolution
http://life.uiuc.edu/animalbiology/105/ID: eee105Password: prAIRie
Lec 13 13Feb02
Natural selection
N
0 100a characteristic
selection
Antibiotic resistance in disease bacteria
Insecticide resistance
disease vectors
QuickTime™ and aMicrosoft Video 1 decompressorare needed to see this picture.
Insecticide resistance
disease vectors
agricultural pests
Pests evolve pesticide resistance
r-strategists evolve most rapidly
Genetic variation is “raw material”
Genetic variation is “raw material”
Environment “edits” the population
Genetic variation is “raw material”
Environment “edits” the population
Genetic variation is “raw material”
Environment “edits” the population
Genetic variation is “raw material”
Environment “edits” the population
Genetic variation is “raw material”
Environment “edits” the population
Genetic variation is “raw material”
Environment “edits” the population
Genetic variation is “raw material”
Environment “edits” the population
natural selectionnatural selection continuous competitioncontinuous competition
Natural selectionNatural selection
continuous competitioncontinuous competition between membersbetween members of the same speciesof the same species
Natural selection
continuous competition between members of the same species
Natural selection
N
0 100a characteristic
selection
Selection forces ?
Selection forces
Natural selection
Physical environmental factorse.g weather
Density-independent limiting factorsPhysical environmental factorsPhysical environmental factors
e.g weathere.g weather
Selection forces
Natural selection
Physical environmental factorsDensity-independent limiting factors
Density-dependent limiting factors disease predation
Food chain
E
producer primary secondaryconsumer consumer
autotroph herbivore predator
respiration
decomposition
parasites
parasites
parasites
each trophic level regulates population of its preyeach trophic level regulates population of its prey each trophic level selects its preyeach trophic level selects its prey
Selection forces
Natural selection
Physical environmental factorsDensity-independent limiting factors
Density-dependent limiting factors disease predation competition between species
Competition between speciesCompetition between species
pests vs. uspests vs. usCompetition between speciesCompetition between species
Competition between speciesCompetition between species
weeds vs. usweeds vs. us
pests vs. uspests vs. us
Selection forces
Natural selection
Physical environmental factorsDensity-independent limiting factors
Density-dependent limiting factors disease predation competition between species
The ecological theaterThe evolutionary drama
An ecosystem
But, how can “random” processes
design complex structures?
But, how can “random” processes
design complex structures?
Isn’t this like expecting a bunch of monkeys locked in a room with typewriters to eventually type out Hamlet’s soliloquy?
Actually one monkey with a computer could do it -- if it were arranged like natural selection
monkey, typing
computer
q
Don’t Save
m
Don’t Save
t
Save
t
tk
Don’t Save
t
to
Save
to
toq
Don’t Save
that is the question
to be or not to be
that is the question
to be or not to be
Evolution by Natural Selection is not random
Selection is non-randomnon-randomnon-random
