Comment Re:Advantage of Sexual Selection? (Score 3) 10
Many believe it's a reinforcement mechanism between flowering plants and insects. Once both plants and insects got into the symbiosis pattern, it flowered (pun half intended) as both sides gained a big advantage: one was able to disperse its DNA further, and the other got an easy meal.
Why nature didn't invent it earlier is hard to say. Maybe because most insects have crappy eyesight. One then happened to have good-enough eyesight that they could spot flowers at a distance, and evolution improved both bug eyes and flowers after that.