if a plant has purple flowers and is crossed with a plant with white flowers how would i know that purple flowers is dominated

Through the experiment known as a monohybrid experiment. A test cross is performed between two plants that breed true for one trait, and the resulting trait for each offspring plant is determined

In the first step, true-breeding generation, is called the parent, P generation. The first generation of offspring, the first filial generation, is the F1 generation. The F1 generation is crossed with itself. The next generation, F2 generation,you get a 3:1 ration of purple to white flowers

due to the fact that it skipped a generation we can tell it is definitely not a dominant trait, therefore it must be recessive. i think this is right let me know!

explanation: