you are interested in how gpr279, a gpcr, functions within keratinocytes. a drug that specifically targets gpr279 was recently developed. after purchasing the drug, you add increasing concentrations of the drug to your keratinocyte cultures. after 24 hours, the cells were fixed, the dna was stained with a fluorescent dye, and the cells were run on flow cytometry. the following cell cycle profiles were produced. what could you most likely conclude about the drug treatment?