Natural Selection Ch 14,15 Biology: Exploring Life Stratton Click here for 14.3-14.5 Birds on an Island Lab Stabilizing Selection LabClick here for Ch

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


Darwin’s tripDarwin’s trip Ship:Ship: Job: Job: Hobby: Hobby: Findings:Findings:


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


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


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


3.3. Homologous structuresHomologous structures

From Pearson Education Biology: Exploring Life, 2004


4.4. Analogous structuresAnalogous structures

http://cas.bellarmine.edu/tietjen/images/general_phylogeny_images.htm


5.5. Vestigial StructuresVestigial Structures

http://www.talkorigins.org/faqs/comdesc/section2.html



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


5.5. Artificial Selection Artificial Selection

6.6. Selective BreedingSelective Breeding Ex. toy poodlesEx. toy poodles Ex. watermelonEx. watermelon


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


From http://www.phsuccessnet.com/iText/products/0-13-115075-8/text/chapter14/concept14.3.html



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

.com/science/si-science/biology/anim

als/reproductive/cheetah/cheetah.htm

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14.4 Microevolution14.4 Microevolution


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


2.2. Reproductive IsolationReproductive IsolationA.A. TimingTiming

1.1. Eastern spottedEastern spotted

2.2. Western spottedWestern spotted



2.2. Reproductive IsolationReproductive IsolationA.A. TimingTiming

B.B. BehaviorBehavior1.1. FirefliesFireflies

2.2. BirdsBirds




2.2. Reproductive IsolationReproductive IsolationA.A. TimingTimingB.B. BehaviorBehavior

C.C. GameticGametic1.1. PollenPollen2.2. Eggs / SpermEggs / Sperm


2.2. Reproductive IsolationReproductive IsolationA.A. TimingTimingB.B. BehaviorBehaviorC.C. GameticGametic

D.D. GeographicGeographic


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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Return to Main Menu

15.3 Fossil Record (FILL IN NOTES)15.3 Fossil Record (FILL IN NOTES)

Documents

Natural Selection Ch 14,15 Biology: Exploring Life Stratton Click here for 14.3-14.5 Birds on an Island Lab Stabilizing Selection LabClick here for Ch