The fusion of two sisters into a single woman suggests that human identity is not in our DNA

The biologist Alfonso Martínez Arias defends that genes do not define the uniqueness of a person, citing the example of Karen Keegan, who has two genomes Two eggs fertilized by two sperm coincided in a uterus and, instead of giving rise to two sisters, they fused to form a single person: Karen Kee

https://english.elpais.com/science-tech/2024-05-08/the-fusion-of-two-sisters-into-a-single-woman-suggests-that-human-identity-is-not-in-our-dna.html