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Genetic Information and Variation · Spring Term

Gene Linkage and Crossing Over

Investigate how linked genes on the same chromosome can be separated by crossing over, affecting inheritance patterns.

Key Questions

  1. Explain why linked genes do not assort independently.
  2. Analyze how recombination frequency can be used to map gene distances on a chromosome.
  3. Predict the expected phenotypic ratios in a dihybrid cross involving linked genes with and without crossing over.

National Curriculum Attainment Targets

A-Level: Biology - Inheritance
Year: Year 12
Subject: Biology
Unit: Genetic Information and Variation
Period: Spring Term

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