If red skin is dominant to green skin in a certain type of apple, and the genotype of the apple for this trait is ss, what will the phenotype be?

Regulatory Proteins. Positive Regulation. explanation Regulatory Proteins. Positive Regulation. The binding of specific protein (activator) is required for transcription to begin. DNA bound activators can regulate transcription by helping with ignition. To do this they sometimes tether RNA polymerase to the promoter.