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CAIE A-Level Biology 17.2.6 Principles of Selective Breeding

Practise designing selective-breeding programmes by choosing parents, crossing, screening offspring and repeating selection, while managing inbreeding and hybrid vigour.

Syllabus
2028–2030
Course
Biology 9700
Level
A2

Exam points

  • sequence parent selection, crossing, offspring screening and repeated breeding
  • use inbreeding for uniformity and hybridisation for heterosis while limiting depression

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