Now, this may come across as very un-PC. Nevertheless it is my honest opinion and I have enough experience working with them, both while being a superior to one or more, and while being a subordinate to one or more, to be sure of my position.
It is a generalization naturally, but I have yet to meet someone to beat the generalization.
Well, time to stop stalling, here it is.
Women are not good leaders.
I have never worked for a woman that had genuine leadership qualities, I have worked for several who had leadership skills fully on par with South American dictators...or for that matter, leadership skills fully on par with a rabbit. I have worked in groups with women several times, and every time it ended with a disaster. Worst case was in a group of 13 women and 3 men. Within days the women had formed three different fractions that fought eachother viciously while at the same time doing everything to recruit us guys into their fraction.
My experience with regards to working with women is that if there are 1-2 on a group of 5-10 it works ok-ish...you just have to avoid certain topics. If there are more than 2, they will create two fractions where 2 will freeze out 1 for whatever reason. If there are more than 4 they will form two OR MORE fractions and they will spend the majority of their time fighting eachother.
It works better if there are clear hierarchies, like a secretary-boss situation. But as soon as there are fluid hierarchies, like two lawyer-coworkers the scheming bastards begin.
