One interesting and surprising finding regarding the regulation of the ara operon is that it is under both positive and negative control. what protein is responsible for the dual action of this operon?

What is the purpose of a punett square? a: finding the number of offspring people can haveb: predicting the outcome of genetic crosses c: finding how many genes a person has d: predicting the outcome of a coin toss (i think it's b or c but i'm not sure)