Now, when crossing over takes place, the fact that crossing over takes place and we have linked genes, we're going to produce a different distribution of the gamete. So in the case of part A, we saw that there are four possibilities of gametes and each one are equally likely to take place. And so we have a one to one to one to one ratio. Now we're going to have a slightly different case because crossing over takes place at random. So now in metaphase one, before metaphase one actually takes place during ProPhase one of metaphase one. So actually let's change that to ProPhase because we first want to focus on the process of crossing overtaking place.