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SS3: BIOLOGY - 2ND TERM

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  1. Reproductive Behaviours | Week 1
    1 Topic
    |
    1 Quiz
  2. Life Cycles of Insects, Toads | Week 2
    6 Topics
    |
    1 Quiz
  3. Social Insects | Week 3
    2 Topics
    |
    1 Quiz
  4. Biology of Heredity (Genetics) I | Week 4
    4 Topics
  5. Biology of Heredity (Genetics) II | Week 5
    6 Topics
    |
    1 Quiz
  6. Biology of Heredity (Genetics) III | Week 6
    7 Topics
    |
    1 Quiz
  7. Variation | Week 7
    1 Topic
    |
    1 Quiz
  8. Evolution | Week 8
    3 Topics
    |
    1 Quiz



Lesson 8, Topic 3
In Progress

Factors Responsible for Evolution

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Topic Content:

  • Mutation
  • Genetic Drift
  • Gene Flow
  • Isolation

Mutation:

Mutation occurs when DNA fails to copy accurately or is exposed to specific chemicals or radiations (these chemicals cause DNA to break down). Mutation is a sudden and random change in the DNA structure.

 

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