Women with highly symmetrical partners were more than twice as likely to climax during sexual intercourse. Men with symmetrical bodies are typically larger than their peers, more muscular, athletic and dominant in personality. Women are more sexually responsive to symmetrical men. Men who have it exploit that advantage. Extremely symmetrical men are less attentive to their partners and more likely to cheat on them.
Women show no such tendency.
Our innate tendency to prefer symmetry unfortunately doesn't prepare us to prefer integrity, personal worth, or life in complex technological societies. One genetic characteristic that symmetry reveals is genetic diversity. The ability to successfully resist or withstand various environmental traumas or parasitic infection. Pathogens are least resistant to rare alleles. A specific type of asymmetry called fluctuating asymmetry is observed in teeth.