Prick ears

Hi!

I wrote in a few nights ago with a couple of unrelated questions... Thanks for your quick and helpful response!

I was wondering, if a pup was going to end up with prick ears, when would they become noticeable? Our 7-week old's mom has prick ears, but the father does not. Maggie (our puppy) has one ear that is definitely not going anywhere, but the other ear looks like it could go either way.

Just curious...

Thanks a lot for your help.