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Variants and alleles

Variants and alleles

A variant is a difference in a DNA base sequence. When different versions of the same gene have different base sequences, those versions are called alleles.

3.2.7 Coding DNA variants affecting phenotype Lesson

  1. GCSE
  2. /Biology
  3. /3.2.7 Coding DNA variants affecting phenotype

Step-by-step lessons on Edexcel GCSE Biology 3.2.7 Coding DNA variants affecting phenotype. Each one builds up to exam-style questions. Start with the foundational topics and build up to the higher-tier material.

Lessons