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IB Biology D3.2.14 Continuous variation

IB Biology D3.2.14 Continuous variation
IB Biology syllabusBiology SL/HLFirst assessment 2025

Practise interpreting continuous variation in human traits, including height, skin colour and eye colour, using data, graphs and inheritance evidence.

How this is tested

  • explain continuous variation using many genes and environmental influences
  • distinguish continuous data from discrete categories with human examples
  • interpret height or colour distributions as evidence for polygenic inheritance
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