You have identified a plant in your garden with a new flower color. You want to determine if this phenotype is dominant or recessive. Which cross would tell you this? You have identified a plant in your garden with a new flower color. You want to determine if this phenotype is dominant or recessive. Which cross would tell you this? crossing the new plant to one you know has the dominant trait crossing the plant to one you know has the recessive trait selfing the plant sequencing the DNA for the trait crossing the plant to a plant of the same type of any color