2002 Biology paper 2 [Genetics]- Genetic diagrams/Ratios/interpretations exam revision

[@AlbertAlbert-i7f]

The First Genetic Diagram must be between pure white and pure brown (BB) and (bb) to produce all white (Batch 1) but heterozygous Bb, Bb, Bb, Bb. The second genetic diagram is the one that is in this video using Batch 1, hence the requirement of the question; GENETIC DIAGRAMS.