When I took a course on genetics and evolution, I learned that recombination and sexual reproduction is advantageous compared to asexual reproduction. Sexual reproduction allows more combinations of DNA because of recombination, allowing more variations of species, causing natural selection to "choose" different variations of species to reproduce and share their genes to help the species from dying out. On the other hand, asexual reproduction doesn't allow recombination. So species can only rely on mutational changes to keep a species safe from extinction. Therefore, why don't we see more sexually reproducing species than asexually reproducing species? Sexually reproducing species have an advantage, don't they?