In a bizarre scientific discovery, a man found he absorbed his own twin in the womb, and then his unborn brother fathered his son reports Daily Mail

After giving birth to a son through a fertility clinic a Washington couple, who wish to remain anonymous, were shocked to discover their son had a different blood type to them.

Initially, they blamed the clinic for bungling the sperm samples but they were informed that they were the only Caucasians to give sperm that day and the child was definitely Caucasian in appearance.

This prompted further genetic testing which unveiled something remarkable. The biological father was not the genetic father of the child and the DNA was actually from his unborn twin. The man was the child's uncle.