NS 1.4 (1/10)

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What environmental conditions would make it helpful to have more fur as seen in Generation 2? Explain.
CFS:
accurately uses visual data to draw conclusions on population variations
describes the cause and effect relationship between environmental factors and species traits

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Amplify Science

Unit 8: Natural Selection

Chapter 1: Environmental Change and Trait Distribution

Lesson 1.4: Investigating changes in trait distribution

Goal:

· Observe why the distribution of fur traits changes over time.

Do:

Open the Natural Selection Simulation and open the mode: Fur and Temperature A.
Change the temperature of the environment to cold (Level 1) by moving the Temperature slider.
Press RUN and observe the population for at least 50 generations.
Press ANALYZE and compare starting and ending histograms.

Tips:

· Press the Reset button and repeat your test to see if you observe the same changes each time.

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Observe and record the distribution of fur traits changes over time.

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What environmental changes cause the distribution of fur traits to change over time?
CFS:
accurately uses visual data to draw conclusions on population variations
describes the cause and effect relationship between environmental factors and species traits

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What evidence do you have to support the differences in the two histograms above?
CFS:
accurately uses visual data to draw conclusions on population variations
describes the cause and effect relationship between environmental factors and species traits

Reading: Wildlife in the Woods

1. First, read and annotate the “Common Garter Snake” article.

2. Next, choose one other article to read and annotate.

3. Then, answer the reflection questions that go with the three articles you read.

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What part of the environment might make an individual more or less likely to survive?

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Which traits does the common garter snake have that might be adaptive for the environment where it lives?

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Observe and record how the number of snake strips changes over time.

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Article 2
Which organism did you read about? _____________________
What part of the environment might make an individual more or less likely to survive?

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Which traits might be adaptive for that environment?

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Observe and record how the adaptive trait changes over time.

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Article 3
Which organism did you read about? _____________________
What part of the environment might make an individual more or less likely to survive?

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NS 1.4 (1/10)

What environmental conditions would make it helpful to have more fur as seen in Generation 2? Explain.CFS:accurately uses visual data to draw conclusions on population variationsdescribes the cause and effect relationship between environmental factors and species traits

Observe and record the distribution of fur traits changes over time.

What environmental changes cause the distribution of fur traits to change over time?CFS:accurately uses visual data to draw conclusions on population variationsdescribes the cause and effect relationship between environmental factors and species traits

What evidence do you have to support the differences in the two histograms above?CFS:accurately uses visual data to draw conclusions on population variationsdescribes the cause and effect relationship between environmental factors and species traits

What part of the environment might make an individual more or less likely to survive?

Which traits does the common garter snake have that might be adaptive for the environment where it lives?

Observe and record how the number of snake strips changes over time.

Article 2Which organism did you read about? _____________________What part of the environment might make an individual more or less likely to survive?

Which traits might be adaptive for that environment?

Observe and record how the adaptive trait changes over time.

Article 3Which organism did you read about? _____________________What part of the environment might make an individual more or less likely to survive?

Which traits might be adaptive for that environment?

What environmental conditions would make it helpful to have more fur as seen in Generation 2? Explain.CFS:accurately uses visual data to draw conclusions on population variationsdescribes the cause and effect relationship between environmental factors and species traits

Observe and record the distribution of fur traits changes over time.

What environmental changes cause the distribution of fur traits to change over time?CFS:accurately uses visual data to draw conclusions on population variationsdescribes the cause and effect relationship between environmental factors and species traits

What evidence do you have to support the differences in the two histograms above?CFS:accurately uses visual data to draw conclusions on population variationsdescribes the cause and effect relationship between environmental factors and species traits

What part of the environment might make an individual more or less likely to survive?

Which traits does the common garter snake have that might be adaptive for the environment where it lives?

Observe and record how the number of snake strips changes over time.

Article 2Which organism did you read about? _____________________What part of the environment might make an individual more or less likely to survive?

Which traits might be adaptive for that environment?

Observe and record how the adaptive trait changes over time.

Article 3Which organism did you read about? _____________________What part of the environment might make an individual more or less likely to survive?

Which traits might be adaptive for that environment?

What environmental conditions would make it helpful to have more fur as seen in Generation 2? Explain.
CFS:
accurately uses visual data to draw conclusions on population variations
describes the cause and effect relationship between environmental factors and species traits

What environmental changes cause the distribution of fur traits to change over time?
CFS:
accurately uses visual data to draw conclusions on population variations
describes the cause and effect relationship between environmental factors and species traits

What evidence do you have to support the differences in the two histograms above?
CFS:
accurately uses visual data to draw conclusions on population variations
describes the cause and effect relationship between environmental factors and species traits

Article 2
Which organism did you read about? _____________________
What part of the environment might make an individual more or less likely to survive?

Article 3
Which organism did you read about? _____________________
What part of the environment might make an individual more or less likely to survive?

What environmental conditions would make it helpful to have more fur as seen in Generation 2? Explain.
CFS:
accurately uses visual data to draw conclusions on population variations
describes the cause and effect relationship between environmental factors and species traits

What environmental changes cause the distribution of fur traits to change over time?
CFS:
accurately uses visual data to draw conclusions on population variations
describes the cause and effect relationship between environmental factors and species traits

What evidence do you have to support the differences in the two histograms above?
CFS:
accurately uses visual data to draw conclusions on population variations
describes the cause and effect relationship between environmental factors and species traits

Article 2
Which organism did you read about? _____________________
What part of the environment might make an individual more or less likely to survive?

Article 3
Which organism did you read about? _____________________
What part of the environment might make an individual more or less likely to survive?