A Texas mom checked with doctors when she noticed her twins didn’t look much alike—and learned they had different dads, Fox News reports. Much to the surprise of her partner, paternity tests showed two eggs had been fertilized by different sperm; the woman said she’d had an affair and had been impregnated by two men at the same time. “I'm very shocked,” Mia Washington said.
“Most people don't believe it can happen, but it can,” said an expert. Only a few such cases have ever been recorded.