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Activity 13. The Processes and Outcomes of Evolution. What process do you think produce the biodiversity of life on Earth? . Read the introduction. Microevolution is evolution on a small scale, and it results in changes in the proportion of genes in a population.

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Activity 13

Activity 13

The Processes and

Outcomes of Evolution



Read the introduction
Read the introduction. on Earth?

  • 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.


  • Macroevolution on Earth? 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.


Challenge on Earth?

  • How do evolutionary processes lead to changes in biodiversity?


Anticipation guide the processes and outcomes of evolution
Anticipation Guide: The Processes and Outcomes of Evolution on Earth?

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

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


Return to student sheet 3 1 ideas about evolution
Return to Student Sheet 3.1, “Ideas about Evolution” on Earth?

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


Analysis 2
Analysis 2 on Earth?

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


Revisit the on Earth? Challenge

  • How do evolutionary processes lead to changes in biodiversity?


Key Vocabulary on Earth?

  • 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


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