What percentage of Mendel's F1 hybrids had violet flowers?

1. Mendel first confirmed he had plants that bred true for white or violet flower colour. 2. He then crossed the two true-breeding lines. 3. After gathering and sowing the seeds that resulted from this cross, Mendel found that 100 percent of the F1 hybrid generation had violet flowers. 4. The white form did not vanish, though: it reappeared in the progeny of the hybrid offspring. _Source: OpenStax Biology for AP(R) Courses (CC BY 4.0), Ch 12 'Mendel's Experiments and Heredity', sections 12.1-12.3_