It’s always a little weird when a couple looks like they could be related, but Brit explains the science behind why it’s not totally creepy! It involves percentages and kind of uncomfortable rating systems!
Hosted by: Brit Garner ———- Support SciShow by becoming a patron on Patreon: https://www.patreon.com/scishow ———- Dooblydoo thanks go to the following Patreon supporters: Kevin Bealer, Mark Terrio-Cameron, KatieMarie Magnone, Patrick Merrithew, D.A. Noe, Charles Southerland, Fatima Iqbal, Sultan Alkhulaifi, Nicholas Smith, Tim Curwick, Alexander Wadsworth, Scott Satovsky Jr, Philippe von Bergen, Bella Nash, Chris Peters, Patrick D. Ashmore, Piya Shedden, Charles George ———- Looking for SciShow elsewhere on the internet? Facebook: http://www.facebook.com/scishow Twitter: http://www.twitter.com/scishow Tumblr: http://scishow.tumblr.com Instagram: http://instagram.com/thescishow ———- Sources: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2992433/ http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0068395 http://www.psychology.nottingham.ac.uk/research/vision/jwp/papers/pentonvoak1999.pdf https://www.researchgate.net/publication/222608863_Exposure_effects_in_the_classroom_The_development_of_affinity_among_students http://www.pnas.org/content/111/22/7996.full http://www.sciencemag.org/news/2009/10/case-closed-famous-royals-suffered-hemophilia https://www.researchgate.net/profile/Michael_Marks5/publication/45278704_Westermarck_Freud_and_the_Incest_Taboo_Does_Familial_Resemblance_Activate_Sexual_Attraction/links/0a85e535009ba7899a000000/Westermarck-Freud-and-the-Incest-Taboo-Does-Familial-Resemblance-Activate-Sexual-Attraction.pdf http://philipperushton.net/wp-content/uploads/2015/02/race-genetic-similarity-marriage-rushton-russell-ethology-sociobiology-1985.pdf http://philipperushton.net/wp-content/uploads/2015/02/race-genetic-similarity-fertility-rushton-ethology-sociobiology-11-1988.pdf