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IB Biology HL D2.1.11 Meiosis generates variation

IB Biology HL D2.1.11 Meiosis generates variation
IB Biology syllabusFirst assessment 2025

Practise explaining how meiosis creates genetic variation through chromosome pairing, crossing over and separation into gametes.

How this is tested

  • explain how crossing over between non-sister chromatids creates new allele combinations
  • identify prophase I images using paired homologous chromosomes or chiasmata
  • link independent separation of homologous chromosomes to variation among gametes
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