Neanderthal genes have been described in the homo sapien population. The Neanderthal brain structure results in female dominance and matriarchal social patterns. The Neanderthal phenotype is due to symbiosis by actinidic archaea using cholesterol as an energy substrate. The increasing cholesterol catabolism by actinidic archaea results in depletion of cholesterol from the body. This produces inhibition of estrogen and testosterone synthesis. This results in an asexual state and androgynous behaviour. The adult onset autistic phenotypes consequent to archaeal endosymbiosis lack social skills and graces required for social contact leading to inhibition of spontaneous normal heterosexual behaviour and family life as well as interactions. There would be an over reliance or instantaneous gratification given by the internet and artificial intelligence. This leads to break down of human relations producing the world of asexual infertile population of herbivores. The adult autistic asexual digisexual phenotypes will regenerate the population by cloned cyborgs and asexual reproduction.