Chimerism

This Woman Is Her Own Twin: What Is Chimerism?

https://www.livescience.com/61890-what-is-chimerism-fused-twin.html


It’s possible for one person to have two different sets of DNA — here’s how it happens

https://www.thisisinsider.com/what-is-a-human-chimera-and-how-does-it-happen-2017-11