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WARM-UP 2/6:• What are the three experiments to discredit the ideas of
spontaneous generation & the vital force?• Include the names of the experimenters and what
experiments were conducted.• What was the composition of the Earth’s early
atmosphere?• Which scientists wrote a paper in the 1920’s predicting that
the atmosphere could be responsible for organic molecules?• Which scientist recreated the early atmosphere to synthesize
primordial soup?
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EXAM• Wednesday February 12.
• Study Guide: Due Tuesday February 11. • Will be stamped on 2/11 & Collected on 2/12
• Intervention/Study Lab• Directed Test Prep: 45 minutes• In this classroom• Monday: 2:45- 3:30 pm • Tuesday: 6:50 – 7:35 am• 5% Extra credit on test
• Up to 75% Test Score• Must be on time, stay 45 min, complete all assignments
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FLIGHTLESS BIRDA Flightless bird ends up on two different islands. The bird
is medium height, has a medium length weak beak and is slow moving.
How will the bird adapt on Islands #1 & #2:Make 2 columns.How many birds can survive without competing for food?For Each Bird Describe: Amount of feathers, Beak style,
speed and height.
Hints: Weak Beaks are OK for insects. Strong Beaks are required for seed pods.
Short beaks are Ok for food on the ground. Long Beaks are required for food inside bark.
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MAKE 2 COLUMNS: 1 FOR EACH ISLAND
ISLAND #1
Climate: Hot and DryFood Sources: a. Plants in seed
pods on ground.b. Fast moving
insects on groundc. Slow insects
inside tall tree bark.
ISLAND #2
Climate: Cold and WetFood Sources: a. Plants in seed
pods in tree bark.b. Slow moving
insects on groundc. Slow insects
inside tall tree bark.
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WARM UP 2/7For your flightless birds from yesterday’s activity.
• Did the birds change to be more similar or more different?
• What things increased the birds similarities?• What things increased the birds differences?
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15-3 NOTES: EVOLUTION IN ACTIONPP. 308-311
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EVOLUTION DEFINED…Evolution of a population is due to environment and the interaction of other species
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ARTIFICIAL SELECTION humans breed for specific traits causing differences in species (i.e. dog breeding)
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TYPES OF EVOLUTION Convergent evolution:•Organisms with very different ancestors become more alike due to a common environment •compare analogous structures: same functions but different development (EX: fish and whales)
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Ex: whale and fish, bird and insect
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TYPES OF EVOLUTION
Divergent evolution: populations become more and more dissimilar to adapt to the environment-compare homologous structures: similar body part but may have different functions
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Adaptive Radiation: Population undergoes divergent evolution until it fills all areas of the environment
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• EX: Rough-skinned newt and garter snake• Newt evolved to produce neurotoxins then the
snake evolved resistance to this toxin through genetic mutations.
Birds and flowers,Humans and bacteria are other examples
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COEVOLUTION• When two
species each evolve in response to each other over a long period of time.
• This leads to a close relationship
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4-SQUARE MODELDefinition Picture
Example Related Words (3)Word
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CLASSWORK“Types of Evolution Tree Map”Vocabulary 4-squares
• Convergent evolution• Divergent evolution• Artificial selection• Coevolution
Definition Picture
Example Related Words (3)Word
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Types of Evolution
Convergent Evolution
Definition
Example
Divergent Evolution
Definition
Example