Plant and Animal Breeding
Selection of useful characteristics, field trials, inbreeding, outbreeding, crossbreeding, genetic technology and maintaining variation.
How to study Higher Biology
Move from accurate biological mechanisms to unfamiliar data, experimental evidence and justified conclusions. Use current official materials for the written, extended-response and controlled-assignment formats that this question bank does not reproduce.
Core concepts
Concept 1
Use replicated, randomised field trials across environments to compare cultivars or treatments.
Exam cue: Use replicated, randomised field trials across environments to compare cultivars or treatments.
Concept 2
Compare inbreeding, outbreeding and crossbreeding effects on desired traits and genetic variation.
Exam cue: Compare inbreeding, outbreeding and crossbreeding effects on desired traits and genetic variation.
Concept 3
Evaluate marker-assisted selection and genetic technologies alongside welfare, ecological and food-security consequences.
Exam cue: Evaluate marker-assisted selection and genetic technologies alongside welfare, ecological and food-security consequences.
Risk pitfalls and guardrails
A high-yield result at one site may not generalise across environments.
Guardrail: Check vocabulary, sequence, direction, compartment, units and whether the evidence supports causation or only an association.
Intense selection can reduce genetic diversity and future resilience.
Guardrail: Check vocabulary, sequence, direction, compartment, units and whether the evidence supports causation or only an association.
Memory anchors
Fair field trial
Replicate, randomise and repeat across environments.
Breeding trade-off
Gain a trait without losing too much variation.
Checkpoint rule
Do the check-up only after you can summarize each concept in one sentence and identify one dangerous pitfall from memory.
Knowledge Check (after reading)
Short check-up to confirm understanding of this module.
Check-up Questions
What is the main aim of selective plant or animal breeding for food production?
Why are plant field trials conducted in a range of environments?
Answer all questions to submit.
Next step personalized recommendations
Continue learning
Move forward only after this module is stable.
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