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D2.2 Gene expression (HL) Lessons - IB Biology

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D2.2 Gene expression (HL)

IB Biology Topic D2.2: Gene Expression Lessons

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Lessons for D2.2 Gene expression (HL) - IB

This lesson delivers structured, step-by-step lessons that guide students through every part of the IB Biology syllabus for D2.2 Gene expression (HL). These lessons simplify complex ideas like molecular biology, evolutionary mechanisms, and homeostasis, while worked examples show how to approach IB-style questions.

Designed for both HL and SL learners, RevisionDojo lessons ensure students not only understand the theory but also know how to apply it in IB Paper exam situations.

With clear explanations, active learning checks, and a syllabus-first design, RevisionDojo makes revision less overwhelming and more effective.

D2.2.1 Gene expression

D2.2.2 Regulation of transcription by proteins

D2.2.3 Control of the degradation of mRNA

D2.2.4 Epigenesis

D2.2.5 Differences between the genome, transcriptome and proteome of individual cells

D2.2.6 Methylation of the promoter and histones in nucleosomes as examples of epigenetic tags

D2.2.7 Epigenetic inheritance through heritable changes to gene expression

D2.2.8 Examples of environmental effects on gene expression in cells and organisms

D2.2.9 Consequences of removal of most but not all epigenetic tags from the ovum and sperm

D2.2.10 Monozygotic twin studies

D2.2.11 External factors impacting the pattern of gene expression

D1.1 DNA replication

D1.2 Protein synthesis

D1.3 Mutations and gene editing

D2.1 Cell and nuclear division

D2.2 Gene expression (HL)

D2.3 Water potential

D3.1 Reproduction

D3.2 Inheritance

D3.3 Homeostasis

D4.1 Natural selection

D4.2 Sustainability and change

D4.3 Climate change