The phlox plant with white funnel-shaped flowers is crossed with a plant that has creamy flat flowers.

The phlox plant with white funnel-shaped flowers is crossed with a plant that has creamy flat flowers. In F1 – plants with white flat flowers. The F1 hybrid was crossed with a plant whose traits are unknown. In the offspring from this crossing: 1/4 of the plants have white flat flowers, 1/4 – white funnel-shaped, 1/4 – cream flat and 1/4 – cream funnel-shaped. Determine: 1) which features are dominant; 2) the genotype and phenotype of the plant with which the F1 hybrid was crossed.

1) Dominant features – white color and flat corolla, recessive – cream color and funnel-shaped corolla;
2) crossing the F1 hybrid was carried out with a plant with cream funnel-shaped corollas (genotype aabb).

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