Change Over Time · Evolution

Natural Selection and Adaptation

Investigating how environmental pressures select for traits that increase reproductive success.

Key Questions

  1. 1How does the environment act as a filter for genetic traits in a population?
  2. 2What happens to a species when the rate of environmental change exceeds the rate of adaptation?
  3. 3How can artificial selection by humans be compared to natural selection in the wild?

Common Core State Standards

HS-LS4-2HS-LS4-4
Grade: 9th Grade
Subject: Biology
Unit: Change Over Time
Period: Evolution

Suggested Methodologies

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Evidence for Common Ancestry

Reviewing fossil records, comparative anatomy, and molecular data to trace evolutionary lineages.

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Examining the processes that lead to the formation of new species and the loss of others.

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