Evidence for evolution 5.1

There are different types of evidence which support the theory of evolution, from fossils to selective breeding. This topic covers a range of evidence and some of the concepts related to inheritance, natural selection and evolution. 


Key concepts

Learn and test your biological vocabulary for 5.1 Evidence for evolution using these flashcards.

Essentials - quick revision through the whole topic

These slides summarise the essential understanding and skills in this topic. 
They contain short explanations in text and images - good revision for all students.

Read the slides and look up any words or details you find difficult to understand.

Exam style question about pentadactyl limbs

The question below, requires an understanding of the structure of the pentadactyl limb and the differences and adaptations which can be found in different animals. In this case the examples are birds and humans.

Compare and contrast the pentadactyl limb of mammals and birds. [4]

  • Include similarities in structure
  • Mention differences in specific elements

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Describe how the structure of the wing and hand is adapted to each different function [2]

  • Try to link structure and function in each point of your answers?

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Explain how the existence of these structures in birds and mammals provides evidence supporting the theory of evolution. [3]

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Click the + icon to see a model answer.

Revision summary list for 5.1 Evidence for evolution

  • A change in the heritable characteristics of a species is evolution.
  • Evidence for evolution comes from
    • the fossil record.
    • Selective breeding of domesticated animals
    • "Adaptive radiation" can explain similar structures with different functions.
    • Isolated populations can produce separate species by divergent evolution.
    • Continuous variation across the geographical range of related populations matches the concept of gradual divergence.

Skills (can you ....)

  • Describe how the dark bark leads to the development of melanistic insects in polluted areas.
  • Compare and contrast the pentadactyl limb of mammals, birds, amphibians and reptiles.
  • Describe how each limb structure is adapted to each different method of locomotion.

Mindmaps

These diagram summaries cover the main sections of topic 4.3 Carbon cycle.
Study them and draw your own list or concept map, from memory if you can.

Test yourself - multiple choice questions

This is a self marking quiz containing questions covering the topic outlined above.
Try the questions to check your understanding.


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Just for fun

Everyone needs a bit of fun while they revise. Try this Evidence for evolution arcade game.
Can you reach the leader board?