Activity 13The Processes andOutcomes of Evolution

Activity 13: The Processes and Outcomes of Evolution

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Activity 13: The Processes and Outcomes of Evolution

Get Started

What process do you think produce the biodiversity of life on Earth?

Activity 13: The Processes and Outcomes of Evolution

Introduction

Microevolution is evolution on a small scale, and it results in changes in the proportion of genes in a population.

Speciation is the formation of species as a result of barriers to gene flow that split the gene pool, followed by an accumulation of differences between the gene pools.

Read the introduction.

Activity 13: The Processes and Outcomes of Evolution

Introduction

Macroevolution is the larger changes and patterns in evolution.

Extinction occurs when the last member of a species dies. At this point the species is said to be extinct.

Activity 13: The Processes and Outcomes of EvolutionActivity 13: The Processes and Outcomes of Evolution

How do evolutionary processes lead to changes in biodiversity?

Challenge

Activity 13: The Processes and Outcomes of Evolution

Procedure

Fill in the Before column of the anticipation guide before beginning the reading.

Fill in the After column once you have completed the reading.

Anticipation Guide: The Processes and Outcomes of Evolution

Activity 13: The Processes and Outcomes of Evolution

Procedure

Add information from this activity or a previous activity to support whether any of the statements are correct or incorrect.

Return to Student Sheet 3.1, “Ideas about Evolution”

Activity 13: The Processes and Outcomes of Evolution

Follow Up

Many Hawaiian honeycreeper birds evolved a musk-like odor that is distasteful to predators. Explain how this adaptation might have evolved through natural selection.

Analysis 2

Activity 13: The Processes and Outcomes of EvolutionActivity 13: The Processes and Outcomes of Evolution

How do evolutionary processes lead to changes in biodiversity?

Revisit the Challenge

Activity 13: The Processes and Outcomes of Evolution

Key Vocabulary

adaptation adaptive character adaptive radiation co-opted feature extinct extinction fit fitness gene flow

genetic drift geographic isolation macroevolution mass extinction microevolution natural selection reproductive isolation speciation

Key Vocabulary