Unit 3 — Heredity
Cell division, DNA replication and expression, mutation, variation and inheritance patterns explain continuity and diversity.
WACE Biology · Free preparation planner
Exam Predictors 2026
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Syllabus preparation with limited indexed evidence. Future exam questions are not guaranteed. Independent of SCSA.
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Unit 3 — Biotechnology
PCR, electrophoresis, sequencing, profiling and recombinant DNA provide evidence and practical applications.
Unit 3 — Evolution and conservation
Evidence supports common ancestry; mutation, selection, drift, founder effect and gene flow alter gene pools.
Unit 4 — Homeostasis
Negative feedback and structural, behavioural and physiological adaptations maintain variables within tolerance limits.
Unit 4 — Infectious disease
Pathogen structure, life cycles, transmission, host density, movement and climate shape outbreaks and control.
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Official assessment material
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WACE Biology — revision plan
Biology ATAR Year 12 syllabus — for teaching from January 2024
Personal preparation priorities, not predicted exam questions, probabilities or grades.
Check current requirements and course options: https://senior-secondary.scsa.wa.edu.au/syllabus-and-support-materials/science/biology
Subject archive: https://atarmaxxing.com.au/subjects/wace-biology/papers