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