Weight training or resistance training used intelligently, can be used to enhance these athletic characteristics. Because all athletes have individual needs, a generic program, like this one below, will need to be modified for the style of fighting, age, goals, facilities available and so on. However, here's a weights program, starting out, that you can use to set yourself up for martial arts competition fighting.
When many MMA fighters train, they keep the length of a standard five minute round in mind by doing circuit training. MMA fighters need to get used to pushing themselves for five minute periods of time just like rounds in fights. So, they organize their workouts into five minute periods with short rests in between. For, example, a fighter might jump rope for five minutes, take 30 seconds to rest, shadow box for five minutes, take 30 seconds of rest, and then run on a treadmill for five more minutes. This example would help a fighter simulate a three-round fight.
Controversy arose in 2013, when CFA (Championship Fighting Alliance) fighter Fallon Fox came out as a transgender woman. The case became a centerpiece of debates concerning whether it was fair to have a transgender woman compete against cisgender women in a contact sport. Neither the UFC nor Invicta FC says they will allow her to fight, and then-UFC Bantamweight champion Ronda Rousey said she would not fight her.
Edit: After speaking to a respected S&C coach that trains elite fighters, he and I both came to the conclusion that I have overstated the importance of lower intensity aerobic development, causing some of my points to be flat out wrong. MMA is no doubt an anaerobic sport - a comprehensive review of the literature on combat sports suggest that anaerobic capacity (lower end, longer bouts of anaerobic efforts) is what distinguishes high level fighters, to lower level competitors. I still believe a solid aerobic base should be possessed and the conditioning work should compliment MMA training. If MMA training lacks anaerobic capacity work, conditioning must address this. If MMA training has sufficient anaerobic capacity work, a S&C coach should preserve these adaptations.
While most fighters use ground-and-pound statically, by way of holding their opponents down and mauling them with short strikes from the top position, a few fighters manage to utilize it dynamically by striking their opponents while changing positions, thus not allowing their opponents to settle once they take them down. Cain Velasquez is one of the most devastating ground strikers in MMA and is known for continuing to strike his opponents on the ground while transitioning between positions. Fedor Emelianenko, considered among the greatest masters of ground-and-pound in MMA history, was the first to demonstrate this dynamic style of striking in transition. He was striking his opponents on the ground while passing guard, or while his opponents were attempting to recover guard.
The truth is this: if you really put your mind to it, went back to school and graduated with an honors degree in exercise science, trained dozens of fighters in person and hundreds of fighters around the world while receiving feedback and tweaking the program to make it better and better, in about 10 years or so you could probably develop, perhaps, an equally effective strength and conditioning program for MMA yourself, just like I did with the Ultimate MM Strength and Conditioning Program.