before we could give answers please define first what "weaker ***" means.
if we are going to rely on our history books, human beings have males as the dominating ***. If we are going to study mammals in general, mammals tend to have male leaders, be it a pack of wolves or a group of monkeys.
But unlike mammals, the insects tend to have a matriarchal approach when it comes to leading their colonies. so i guess it really depends on the situation.
I don't think that being weaker is the right term for that but i also cannot really say that there is real equality for both ***es. All i can say that in some occasions, the males dominate but in some occasions the females do. It is primarily because of what each gender is capable of doing which is probably more applicable to the current situation he/she is facing.