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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? - PowerPoint PPT Presentation
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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?
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
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.
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.
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?
15-3 NOTES: EVOLUTION IN ACTIONPP. 308-311
EVOLUTION DEFINED…Evolution of a population is due to environment and the interaction of other species
ARTIFICIAL SELECTION humans breed for specific traits causing differences in species (i.e. dog breeding)
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)
Ex: whale and fish, bird and insect
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
Adaptive Radiation: Population undergoes divergent evolution until it fills all areas of the environment
• 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
COEVOLUTION• When two
species each evolve in response to each other over a long period of time.
• This leads to a close relationship
4-SQUARE MODELDefinition Picture
Example Related Words (3)Word
CLASSWORK“Types of Evolution Tree Map”Vocabulary 4-squares
• Convergent evolution• Divergent evolution• Artificial selection• Coevolution
Definition Picture
Example Related Words (3)Word
Types of Evolution
Convergent Evolution
Definition
Example
Divergent Evolution
Definition
Example