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IB Biology D3.2.8 SNPs & multiple alleles

IB Biology D3.2.8 SNPs & multiple alleles
IB Biology syllabusBiology SL/HLFirst assessment 2025

Practise recognising alleles as gene forms that differ in base sequence, including questions on SNPs and multiple alleles.

How this is tested

  • identify alleles as different gene forms with small base sequence differences
  • distinguish allele differences from chromosome position or shared traits
  • interpret Punnett grids as evidence for more than two allele forms
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