IB skill practice

Use advanced inheritance and linkage reasoning

Syllabus-aligned Biology HL genetics, evolution, respiration, and photosynthesis skill with approved production seeds.

Paper 1, Paper 2 5 marks Difficulty 5

Recognise linked-gene evidence

An inheritance table in a chromosome modelling activity shows two parental phenotype combinations are much more common than the two recombinant combinations. Explain what this suggests about the genes. Use the diagram labels, data values, or inheritance pattern before writing the answer. Enter the answer and choose the interpretation that best matches the HL Biology evidence.

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