The question that i had was do females always choose their mate. By looking up "sexual selection in males" on Google, I found that the female doesn't always choose, but in most cases they do. There was several sites that showed how the female selects a mate. I did find one site that can argue that the males choose. It says in the fly Scatophaga stercoraria, the male captures the female, but it also said that the female fly sticks around larger male flies for three reasons: (1) reduced harm in struggles; (2) more rapid copulation and oviposition, with lower risk to the female and her progeny; and (3) greater ability to escape danger during copulation. What I've learned about evolution in this study is that no individual evolves, but the population as a whole evolves. An example of this is shown in the picture:
Most of the bugs that survive are immune to the pesticide but it kills everything else. Since there is nothing to compete the immune bug reproduces and all the offspring are immune bugs. So the population has evolved into bugs that are immune to the pesticide, not any one individual. When I saw this slide it explained the process to me way better. In most cases evolution doesn't happen that rapidly it usually happens over many generations.