Theory of Evolution

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Theory of Evolution

A BRIEF STUDY OF

EVOLUTIONARY

EVIDENCE

Day 1: Goals and Vocabulary

Students understand the definition of natural selection and the man who discovered it.

Vocabulary

Natural Selection: The process of the environment around a population choosing which organisms survive.

Theory: A hypothesis supported by experimental evidence from a variety of different scientific fields.

Evolution : The process of population changes over time.

Species : A population of organisms that cannot reproduce with other populations.

Fitness : The ability to survive in a certain environment.

Mutation : A random change in the genetic code to produce a different phenotype.

Day 2: Goals and Vocabulary

Students reinforce the definition of natural selection and graphical representations of population changes.

Vocabulary

Natural Selection: The process of the environment around a population choosing which organisms survive.

Theory: A hypothesis supported by experimental evidence from a variety of different scientific fields.

Stabilizing Selection: Populations of phenotypes at the spectrum are more fit.

middle of the

Disruptive Selection: Populations of phenotypes at both ends spectrum are more fit.

Directional Selection: Populations of phenotypes at spectrum are more fit.

one end of the of the

Day 3: Goals and Vocabulary

Students build scientific vocabulary on speciation and learn the 4 types.

Vocabulary

Natural Selection: The process of the environment around a population choosing which organisms survive.

Theory: A hypothesis supported by experimental evidence from a variety of different scientific fields.

Geographic Isolation: Different species develop because they spend generations in different locations.

Reproductive Isolation: Different species develop because two populations cannot breed together.

Temporal Isolation: Different species develop because two or more populations do not follow the same the day schedule.

Behavioral Isolation: Different species develop because populations behave differently in terms of breeding/courtship.

Day 4: Goals and Vocabulary

Students read cladograms—evolution maps created by biologists.

Vocabulary

Natural Selection: The process of the environment around a population choosing which organisms survive.

Theory: A hypothesis supported by experimental evidence from a variety of different scientific fields.

Cladograms: Evolutionary maps that track changes in evolutionary traits.

Traits: Physical results of certain genetic sequences.

Common Ancestor: The older species that two or more other species branched off from.

BrainJog #1: Natural Selection

1.

2.

White is dominant to black fur color in mice. These mice live in a black lava field.

Over several generations,

explain

how the population of mice will change in terms of fur color. (2 sentences).

BrainJog #2: Natural Selection

1.

2.

A population of white and black mice are separated by a mountain. On one side, there is a white mountain. On the other, there is a black lava field.

Over several generations,

explain

how the population of mice will change in terms of fur color on either side of the mountain. (4 sentences).

BrainJog #3: Natural Selection Review

1.

2.

1.

How would you describe

Darwin’s theory of natural selection to someone who did not know what it meant?

Must use this vocabulary: organism, adaptation, population, environment, phenotype, mutation.

How do you think one species of finch gave rise to

14 different finches on the

Galapagos Islands?

Darwin Finches Activity

Goal of Activity

Students elaborate on process of natural selection by simulating the selection process.

Expectations

1.

Play fairly and no pushing/shoving.

2.

3.

Read ALL procedures.

Record data after every trial.

4.

5.

6.

Complete histogram (bar graph) when trials are over.

Discuss with group conclusion and analysis.

Entire worksheet completed in 20min.

Consequences

Breaking any rule, incomplete work, or lack of participation will result in a lower grade for the activity.

Vocabulary Review for Test

1. Complete the Vocabulary List Chart on (pg. 18) with a definition and a drawing. Refer to the chart below for help:

Vocabulary

Word

Book

Definition

Own

Definition

Drawing

Exit Slip #3: Natural Selection

1.

2.

3.

A population of tapirs experienced all 4 types of isolation from a neighboring population.

Over several generations,

list the types of isolation

that could arise over several generations.

Define all 4 types of isolation that cause speciation.

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