For more science and technology videos and documentaries, please subscribe to my channel Science&Technology 4U\rbr\rbrAll sexually reproducing eukaryotic organisms (animals, plants and fungus) evolved from a common ancestor that was a single celled eukaryotic species.[1][2][3] .\rbr\rbrSex is a necessity for most species to survive. As evolution continues, are we approaching a time when sex will no longer be a necessity? How is this possible?\rbr\rbrPrinciples of Evolution, Ecology and Behavior (EEB 122) There are several explanations for the evolution of sex and its continued prevalence. One is facilitating .