GCSE Biology (AQA)

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Natural Selection

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Inheritance, Variation and Evolution The Development of Understanding of Gentics and Evolution

Natural Selection

4:28 Theory of Evolution and Speciation
Spec 4.6.3.1 4.6.3.2
Previous Alfred Russel Wallace Next Extinction
  • Natural selection was described by both Darwin and Wallace as the process by which evolution occurs.
  • Both Darwin and Wallace suggested the theory of evolution by natural selection.
  • The theory of natural selection developed over time and from information gathered by many scientists.
  • In 1858, Wallace published joint writings with Darwin.
  • Although Charles Darwin is often thought of as the father of evolution, Alfred Russell Wallace also independently proposed the theory of evolution by natural selection and worked with Darwin.
  • Darwin, working with Wallace, prompted Darwin to publish "On the Origin of Species" in 1859, solidifying his reputation as the father of evolution.
  • Natural selection is based on a collection of ideas that explain how evolution works, involving variation among individuals in a species, overproduction of offspring, and survival of the fittest leading to inherited traits in successive generations.
  • An example of natural selection in action is the peppered moth, which varies in color due to mutation; darker moths became more prevalent in polluted areas where they were better camouflaged against predators.
  • Exam questions on natural selection might ask students to explain this process using specific examples like the peppered moth, focusing on variation, the struggle for existence, and inheritance.

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