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Biology HL Paper 1A (May 2025, TZ2)

  1. Pink flowers arise from the incomplete dominance between red and white flowers in the four o’clock flower (Mirabilis jalapa). A pink‑flowering variety is crossed with a white‑flowering variety. [Image of a pink flower.]
Embedded figure page 14
Embedded figure from page 14

What could be the possible phenotypes of the offspring?