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Differential gene expression and cell specialisation
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Same genome, different cell types

Same genome, different cell types

Flow diagram from fertilised egg to embryonic cells to neurone, muscle cell and liver cell, showing same DNA but different active genes and proteins

Most nucleated somatic cells in a multicellular organism contain the same genome because they were produced from the fertilised egg by mitosis. Differential gene expression means different cell types use different genes, or use the same genes at different rates.

Differential gene expression and cell specialisation Lesson

  1. A Level
  2. /Biology
  3. /Differential gene expression and cell specialisation

Step-by-step lessons on Edexcel A A Level Biology Differential gene expression and cell specialisation. Each one builds up to exam-style questions. Build a strong foundation in cell biology and biochemistry early on, since later topics on genetics, ecology and physiology all draw on these core concepts.

Lessons