"No, but it's preferred since most students would have taken all the prerequisites already"
"Just before being admitted! On the application, you'll indicate when they'll be taking the rest"
"No, but it's important to have most done (with good grades) so that they know you're serious"
Just like was stated above, you do not need to have all your pre-reqs done before applying. On the application, you will indicate if you have already completed a required course, or if you plan to take it in the future. However, we would advise that you have the majority of your pre-requisites completed before applying.
Here are some answers from Instagram users:
"No, but it's preferred since most students would have taken all the prerequisites already"
"Just before being admitted! On the application, you'll indicate when they'll be taking the rest"
"No, but it's important to have most done (with good grades) so that they know you're serious"
Just like was stated above, you do not need to have all your pre-reqs done before applying. On the application, you will indicate if you have already completed a required course, or if you plan to take it in the future. However, we would advise that you have the majority of your pre-requisites completed before applying.
We hope this helps!