Test
Types of natural selection and speciation
This 11th-grade material explores the different types of natural selection—stabilizing, directional, and disruptive—and concepts of speciation, including geographic and reproductive isolation. Students practice identifying selection types, distinguishing isolation mechanisms, ordering allopatric speciation steps, and completing sentences about trait shifts.
By Edform · Biology · Grade 11 · Published Oct 15, 2026 · New
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Questions
- Which type of natural selection favors individuals with average traits and reduces variation in a population?
- Which of the following are examples of reproductive isolation mechanisms?
- Place the steps of allopatric speciation in the correct order.
- Directional selection occurs when _ is favored, causing the population's traits to shift in _.
- Match each type of natural selection with its effect on population variation.
- Complete the sentence about speciation.
- Sort the following examples into the correct type of natural selection.
- For each statement, indicate if it is true or false regarding speciation.
- What is the term for the formation of new species due to reproductive isolation within the same geographic area?
- Which of the following is most likely to occur if disruptive selection continues over many generations?
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