You could have a secret twin (but not the way you think) - Kayla Mandel Sheets

Download a free audiobook version of “The Vanishing Half“ and support TED-Ed's nonprofit mission: https://www.audible.com/ted-ed--While searching for a kidney donor, Karen Keegan stumbled upon a mystery. After undergoing genetic testing, it turned out that some of her cells had a completely different set of genes from the others. And this second set of genes belonged to her twin sister— who had never been born. How did this happen? Kayla Mandel Sheets explores the condition known as chimerism.Lesson by Kayla Mandel Sheets, directed by Luísa M H Copetti, Hype CG.Support Our Non-Profit Mission----------------------------------------------Support us on Patreon: http://bit.ly/TEDEdPatreonCheck out our merch: http://bit.ly/TEDEDShop----------------------------------------------Connect With Us----------------------------------------------Sign up for our newsletter: http://bit.ly/TEDEdNewsletterFollow us on Facebook: http://bit.ly/TEDEdFacebookFind us on Twitter: http://bit.ly/TEDEdTwitterPeep us on Instagram: http://bit.ly/TEDEdInstagram----------------------------------------------Keep Learning----------------------------------------------View full lesson: https://ed.ted.com/lessons/you-could-have-a-secret-twin-but-not-the-way-you-think-kayla-mandel-sheetsDig deeper with additional resources: https://ed.ted.com/lessons/you-could-have-a-secret-twin-but-not-the-way-you-think-kayla-mandel-sheets#digdeeperCheck out our full book recommendation: https://shop.ed.ted.com/collections/ted-ed-book-recommendations/products/the-vanishing-halfAnimator's website: https://www.luisacopetti.com and https://www.hype.cg----------------------------------------------Thank you so much to our patrons for your support! Without you this video would not be possible! Noa Shore, Jason A Saslow, MJ Tan Mingjie, Dawn Jordan, Prasanth Mathialagan, Samuel Doerle, David Rosario, Siamak H, Manav parmar, Ryohky Araya, Mayank Kaul, Christophe Dessalles, Heather Slater, Sandra Tersluisen, Zhexi Shan, Bárbara Nazaré, Andrea Feliz, Victor E Karhel, Sydney Evans, Latora Slydell, Noel Situ, emily lam, Sid, Kent Logan, Alexandra Panzer, David D, Zuko Gameplays, Jonathan Bates JBZ, Aria Smith, Mac Hyney, Keith Ellison, robin valero walters, Camehira, Lynne Truesdale, Gatsby Dkdc, Matthew Neal, Jayson Gasper Ayson, Jayson Murray, Maxwell Ramsby, Dmitry Yuryev, Kitick, Denis Chon, Julian Oberhofer, Monte Carroll, Eddy, Jay M, Constantino Victor Delgado, Andrea Galvagni, Andrew Tweddle and Laurel-Ann Rice. Learn more about your ad choices. Visit megaphone.fm/adchoices