Biology · Paper 2 · Higher Tier only · B6
Read the allele key and identify the parents. In this flower-colour model, B is dominant purple and b is recessive white. A heterozygous purple plant is Bb; a white plant is bb. Write the possible gamete alleles before filling a square.
No timer. Read the explanation after each answer.
Daily 5 · Exam practice · Revision sheet ↓
Higher Tier only · B6. Fourteen core lessons, followed by two labelled Higher Tier lessons.
AQA Combined Science Trilogy 8464 · 4.6.1.4. Original notes, questions and diagrams. Models are simplified; teaching data are illustrative.