GCSE Biology – Natural selection

Last updated: 30/04/2020
AQA Oxford GCSE Science – Combined science foundation Variation and evolution GCSE Biology – Natural selection

Learning Objectives

-I can explain speciation
-I can explain natural selection

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  1. Current
  2. Review
  3. Answered

  1. What is an allele?

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  2. What does reproduction do?

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  3. What is speciation?

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  4. What process causes speciation?

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  5. What process causes changes to phenotypes of a population?

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  6. What process causes changes to phenotypes of a population?

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  7. What process causes new phenotypes in individuals?

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  8. What is natural selection?

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  9. Over many generations, what happens to phenotypes of populations?

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  10. Over many generations, what happens to phenotypes of organisms?

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  11. If conditions are very different, what happens to the phenotype of the two populations?

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  12. If conditions are similar, what happens to the phenotype of the two populations?

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  13. Why might two populations of the same species have different phenotypes?

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  14. Why are phenotypes different if conditions are different?

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  15. Why are phenotypes similar if conditions are similar?

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  16. A different environment may favour…

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  17. If two populations become very different, what can they not do?

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  18. If two populations cannot interbreed, what has happened?

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  19. Which individuals survive in a population?

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  20. Which individuals do not survive in a population?

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  21. What do the alive individuals do?

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  22. What do parents pass on to the offspring?

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  23. What do offspring receive?

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  24. Which offspring will survive the longest?

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  25. Which offspring will reproduce?

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