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  • KCSE BIOLOGY NOTES ON EVOLUTION

KCSE BIOLOGY NOTES ON EVOLUTION

SKU: 20200702003
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INSIDE EVOLUTION NOTES (19 LESSONS)
7 Pages PDF Document
Specific Objectives
By the end of the topic, the learner should be able to:
  • a) explain the meaning of evolution and the current concepts of evolution
  • b) describe the struggle for existence and survival for the fittest
  • c) describe the evidences for organic evolution
  • d) explain resistance to antibiotics, fungicides and pesticides.
Meaning of evolution
The origin of life
  • Special creation
  • Chemical evolution (Brief explanation required)
Evidences for organic evolution
  • Fossil records - brief mention of human evolution
  • Geographical distribution - continental drift
  • Comparative embryology
  • Comparative anatomy (Convergent and divergent evolution based on homology and analogy)
  • Cell biology - occurrence of cell organelles and blood pigments
Mechanisms of evolution
  • Lamarck's theory (Brief mention)
  • Evolution by natural selection
  • Natural selection in action e.g. peppered moth (industrial melanism)
  • Resistance to drugs, pesticides and antibiotics
Practical activities
  • Compare vertebrate limbs
  • Compare wings of birds and insects
  • Education tour to an archaeological site/local museum
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