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WiredJA News Team Culture

SCIENCE | Born Together, From Different Fathers: The Science Behind a Once-in-a-Million Birth

Michelle and Lavinia are twins in every sense that matters — same womb, same birthday, same mother. But they have different fathers, and their existence is one of the rarest biological events recorded in modern medicine.

A remarkable account published by the BBC tells the story of two women who, at 49 years old, are only now beginning to fully understand the extraordinary biology that brought them into the world. Michelle and Lavinia were conceived naturally, grew side by side in the same womb, and were born to the same mother within minutes of each other. Yet they are half-sisters — twins who share a mother but not a father.

WiredJA News Team Culture
Twins Michelle and Lavinia Osbourne 49, exist because of an incredibly rare biological process called heteropaternal superfecundation.
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