This is the ratio of the four different types of phenotypes of our offspring. So we have four potential phenotypes and these are the ratios. Now, if we want to talk in terms of probability, we can also talk in terms of probability. So remember, the probability of each one of these gametes forming is one four, because out of the four, we have four different possibilities. So each one of these has a probability of taking place with this fraction. And here we have the same exact situation one fourth, one fourth, one fourth.