rolls up sleeves* only 2? none? infinite? hmu with your thoughts. tweet me – http://www.twitter.com/gogreen18 facebook – http://www.facebook.com/officiallacigreen Tumblr – http://lacigreen.tumblr.com REFERENCED Intersex http://www.isna.org/faq/frequency Chromosomal sex in mammals https://www.ncbi.nlm.nih.gov/books/NBK9967/ Hermaphroditic (intersex) animals http://science.jrank.org/pages/3308/Hermaphrodite-Simultaneous-hermaphrodism.html The APA on gender & definitions https://www.apa.org/pi/lgbt/resources/sexuality-definitions.pdf Meta-analysis on psychological sex differences finds only 3 http://www.apa.org/pubs/journals/releases/amp-606581.pdf SUMMARY In this video, Laci Green discusses the question of how many genders there are.