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CAIE A-Level Biology 17.2.1 Natural Selection Mechanism

Practise explaining natural selection from mutation or existing variation through selection pressure, differential survival and reproduction to changed allele frequency.

Syllabus
2028–2030
Course
Biology 9700
Level
A2

Exam points

  • identify the selection pressure and phenotype giving a selective advantage
  • trace survival, reproduction and inheritance to an increased beneficial-allele frequency

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