One egg was fertilized by James's sperm, and the other egg was fertilized by the other man's sperm. Genetically speaking, the twins were born as half-brothers sharing the exact same womb. 🎭 The Case File: The Texas Twins with Two Dads Here are the core details of how the truth was uncovered: Understanding Twins with Different Dads: Superfecundation

Mia had intimate relations with her partner, James Harrison, and another man during her short, highly fertile ovulation window.

🧬 The Scientific Phenomenon: Heteropaternal Superfecundation