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IB Biology D3.2.12 Haemophilia

IB Biology D3.2.12 Haemophilia
IB Biology syllabusBiology SL/HLFirst assessment 2025

Practise solving haemophilia inheritance problems using sex-linked recessive alleles, pedigrees, Punnett grids and probability.

How this is tested

  • explain why males and females show different risks for X-linked haemophilia
  • determine carrier and affected genotypes from family pedigree evidence
  • predict offspring genotypes and phenotypes using a labelled Punnett grid
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