If a thread of a multi-threaded process creates a new thread Either a new single (or multiple) threaded process is created that has a duplicate PCB of the original thread. The new thread will start its execution exactly where the creating thread is A new thread is created in the same process A child thread is created that shares the stack and register information of the thread creating it. A new PCB is created for each of the threads in the original process. If a thread of a multi-threaded process creates a new thread Either a new single (or multiple) threaded process is created that has a duplicate PCB of the original thread. The new thread will start its execution exactly where the creating thread is A new thread is created in the same process A child thread is created that shares the stack and register information of the thread creating it. A new PCB is created for each of the threads in the original process.