Is Ephraim a half tribe along with Manasseh making them the 13th tribe?

Answer:
Joseph made both of his kids tribes of their own, hence
Ephraim is the 13th tribe, but a whole tribe not a half.
First answer by Menibrief. Last edit by Menibrief. Contributor trust: 13 [recommend contributor recommended]. Question popularity: 0 [recommend question].