India, Feb. 19 -- The female orgasm has long been a topic of fascination and debate among researchers. While it's not necessary for pregnancy (as is the case with a man, who needs to orgasm in order to ejaculate, inseminate and thus impregnate a female partner), its purpose has been a subject of interest. As per Psypost.org, one theory suggests that the female orgasm helps women choose high-quality mates, promoting sexual selection. Also read | Women more likely than men to fake orgasms: Study reveals top reasons why they do it

This mate choice theory is similar to how peahens choose peacocks with more impressive tails, as revealed in a 2010 study published on Nature.com. Moreover, in most species, males compete for access to females, wh...