natural selection ch 14,15 biology: exploring life stratton click here for 14.3-14.5 birds on an...
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Natural Natural SelectionSelection
Ch 14,15 Ch 14,15
Biology: Exploring LifeBiology: Exploring Life
StrattonStratton
Click here for 14.3-14.5
Birds on an Island Lab
Stabilizing Selection LabClick here for Ch 15
Click here for 14.1-14.2
Charles DarwinCharles Darwin
1809-18821809-1882
14.1 and 14.2 14.1 and 14.2
Biology 1Biology 1
StrattonStratton
14.1 Darwin’s Accomplishments14.1 Darwin’s Accomplishments
Before DarwinBefore DarwinLeading theory of inheritance –Leading theory of inheritance –
Lamarck Lamarck
14.1 Darwin’s Accomplishments14.1 Darwin’s Accomplishments
Darwin’s tripDarwin’s trip Ship:Ship: Job: Job: Hobby: Hobby: Findings:Findings:
14.1 Darwin’s Accomplishments14.1 Darwin’s Accomplishments
Publishes Publishes The Origin of SpeciesThe Origin of Species 1859: 1,250 copies1859: 1,250 copies 2 main points2 main points
1.1. AncestryAncestry
2.2. SelectionSelection
14.1 Darwin’s Accomplishments14.1 Darwin’s Accomplishments Natural selection - Natural selection -
From Pearson Education Biology: Exploring Life, 2004
14.1 Darwin’s Accomplishments14.1 Darwin’s Accomplishments
Concept Check 14.1Concept Check 14.1
1.1. What is natural selection?What is natural selection?
2.2. Which of the following is an Which of the following is an adaptation: the sharp teeth of a adaptation: the sharp teeth of a house cat, or a scar on the cat's ear? house cat, or a scar on the cat's ear? Explain.Explain.
14.2 Evidence for Natural Selection14.2 Evidence for Natural Selection
1.1. Fossil RecordFossil Record
14.2 Evidence for Natural Selection14.2 Evidence for Natural Selection
2.2. Geographic distributionGeographic distribution Placental vs. MarsupialPlacental vs. Marsupial Island Bio-GeographyIsland Bio-Geography
http://www.bio.utexas.edu/courses/ramakrishnanl/fall03/bio213mw/classnotes/lecture7.ppt#305,15,Ensatina eschscholtzii, a ring species
14.2 Evidence for Natural Selection14.2 Evidence for Natural Selection
3.3. Homologous structuresHomologous structures
From Pearson Education Biology: Exploring Life, 2004
14.2 Evidence for Natural Selection14.2 Evidence for Natural Selection
4.4. Analogous structuresAnalogous structures
http://cas.bellarmine.edu/tietjen/images/general_phylogeny_images.htm
14.2 Evidence for Natural Selection14.2 Evidence for Natural Selection
5.5. Vestigial StructuresVestigial Structures
http://www.talkorigins.org/faqs/comdesc/section2.html
14.2 Evidence for Natural Selection14.2 Evidence for Natural Selection
Concept Check 14.2Concept Check 14.2
1.1. Why are older fossils generally in Why are older fossils generally in deeper rock layers than younger fossils?deeper rock layers than younger fossils?
2.2. How can evolutionary theory explain How can evolutionary theory explain why Australia is home to relatively few why Australia is home to relatively few native placental mammals? native placental mammals?
3.3. What are homologous structures?What are homologous structures?
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Natural SelectionNatural Selection
14.3, 14.4, 14.514.3, 14.4, 14.5
Biology 1Biology 1
StrattonStratton
http://bio.fsu.edu/~levitan/BSC2011/Levitan%20bio2%20lecture%2022.pdf
14.3 Theory of Natural Selection14.3 Theory of Natural Selection
1.1. # offspring produced# offspring produced
2.2. Adapted Adapted
3.3. Not adapted Not adapted
4.4. Variations exist in Variations exist in populationspopulations
A.A. Human hair colorHuman hair color
B.B. Wolf coloring Wolf coloring patternspatterns
From http://www.phsuccessnet.com/iText/products/0-13-115075-8/text/chapter14/concept14.3.html
14.3 Theory of Natural Selection14.3 Theory of Natural Selection
5.5. Artificial Selection Artificial Selection
6.6. Selective BreedingSelective Breeding Ex. toy poodlesEx. toy poodles Ex. watermelonEx. watermelon
14.3 Theory of Natural Selection14.3 Theory of Natural Selection
Natural SelectionNatural Selection
Changes over long Changes over long periods of timeperiods of time
Successful Successful individuals have traits individuals have traits fit for environmentfit for environment
Selective BreedingSelective Breeding
Changes in a few Changes in a few generationsgenerations
Successful Successful individuals have individuals have traits humans liketraits humans like
14.3 Theory of Natural Selection14.3 Theory of Natural Selection
From http://www.phsuccessnet.com/iText/products/0-13-115075-8/text/chapter14/concept14.3.html
14.3 Theory of Natural Selection14.3 Theory of Natural Selection
Concept Check 14.3Concept Check 14.3
1.1. In Darwin's view, what conditions lead In Darwin's view, what conditions lead to a struggle for existence among to a struggle for existence among individuals in a population?individuals in a population?
2.2. What is the goal of artificial selection?What is the goal of artificial selection?
3.3. Why does a specific pesticide become Why does a specific pesticide become less effective over time?less effective over time?
14.4 Microevolution14.4 Microevolution
1.1. Genetic DriftGenetic Drift2.2. Bottleneck effectBottleneck effect
A.A. Ex. Cheetahs - Ex. Cheetahs - B.B. Ex. Pandas - Ex. Pandas - C.C. Ex. Humans –Ex. Humans –
3.3. Founder EffectFounder Effect
http://www.hrw
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14.4 Microevolution14.4 Microevolution
Concept Check 14.4Concept Check 14.4
1.1. What is a gene pool? What is a gene pool?
2.2. How has genetic drift affected the How has genetic drift affected the world's populations of cheetahs? world's populations of cheetahs?
3.3. Describe what is meant by a Describe what is meant by a "biologically fit" organism."biologically fit" organism.
14.5 Natural Selection / Health14.5 Natural Selection / Health
1.1. Sickle CellSickle CellA.A. Advantage?Advantage?B.B. Disadvantage?Disadvantage?
2.2. Antibiotic Resistant BacteriaAntibiotic Resistant Bacteria
14.5 Natural Selection / Health14.5 Natural Selection / HealthConcept Check 14.5Concept Check 14.5
1.1. Under what conditions is the sickle Under what conditions is the sickle cell allele beneficial to a cell allele beneficial to a heterozygous individual?heterozygous individual?
2.2. Identify a possible risk of overuse Identify a possible risk of overuse of antibiotics.of antibiotics.
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EvolutionEvolution
Ch 15Ch 15
Biology 1Biology 1
StrattonStratton
http://eebweb.arizona.edu/michod/Classes/182/182%202006/Michod%20PowerPoint%204.pdf
15.1, 15.2 Species Defined15.1, 15.2 Species Defined
1.1. Morphologically DistinctMorphologically Distinct
http://www.cofc.edu/~welcha/courses/lecture%20notes/lecture%20notes%206%20-%20speciation%20and%20macroevolution.pdf
15.1, 15.2 Species Defined15.1, 15.2 Species Defined
2.2. Reproductive IsolationReproductive IsolationA.A. TimingTiming
1.1. Eastern spottedEastern spotted
2.2. Western spottedWestern spotted
http://bio.fsu.edu/~levitan/BSC2011/Levitan%20bio2%20lecture%2022.pdf
15.1, 15.2 Species Defined15.1, 15.2 Species Defined
2.2. Reproductive IsolationReproductive IsolationA.A. TimingTiming
B.B. BehaviorBehavior1.1. FirefliesFireflies
2.2. BirdsBirds
http://bio.fsu.edu/~levitan/BSC2011/Levitan%20bio2%20lecture%2022.pdf
15.1, 15.2 Species Defined15.1, 15.2 Species Defined
http://bio.fsu.edu/~levitan/BSC2011/Levitan%20bio2%20lecture%2022.pdf
2.2. Reproductive IsolationReproductive IsolationA.A. TimingTimingB.B. BehaviorBehavior
C.C. GameticGametic1.1. PollenPollen2.2. Eggs / SpermEggs / Sperm
15.1, 15.2 Species Defined15.1, 15.2 Species Defined
2.2. Reproductive IsolationReproductive IsolationA.A. TimingTimingB.B. BehaviorBehaviorC.C. GameticGametic
D.D. GeographicGeographic
http://bio.fsu.edu/~levitan/BSC2011/Levitan%20bio2%20lecture%2022.pdf
15.3 Fossil Record15.3 Fossil Record
1.1. Formation of fossilsFormation of fossilsA.A. Same age rocks = Same age rocks = B.B. Periods of TimePeriods of Time
1.1.
2.2.
3.3.
4.4.
15.3 Fossil Record (FILL IN NOTES)15.3 Fossil Record (FILL IN NOTES)
15.3 Fossil Record (cont.)15.3 Fossil Record (cont.)
2.2. Geologic Time ScaleGeologic Time ScaleA.A. Relative datingRelative datingB.B. Radiometric datingRadiometric datingC.C. Fossil DatingFossil Dating
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15.3 Fossil Record (FILL IN NOTES)15.3 Fossil Record (FILL IN NOTES)