UPD BA Psychology - are the major courses seasonal?

Hi! I am considering shifting to BA Psychology next AY, and I've taken Psych 102, all PEs, GEs needed, may mga macocount rin as electives. IF EVER (I know malaking IF EVER pero I just want to be prepared rin po and weigh my options) na maaccept po, I guess I just want to ask if seasonal ba ang majors na walang pre-req? Like if 1st sem, 1st sems lang talaga sila inooffer? Are there ones na offered din sa midyear?

Thank you po