New Delhi: In an extremely rare case of birth of bi-paternal twins, Vietnam houses twins born from same mother but have different fathers.
According to media reports, the twins, born to a Vietnamese couple, were taken for a test owing to huge differences in their appearances.
"Our Centre for Genetic Analysis and Technology lab has tested and found a pair of bi-paternal twins," Le Dinh Luong, president of the Genetic Association of Vietnam, told a leading news agency.
This can happen if two eggs from the same mother are fertilised by sperm from two different men during separate acts of sexual intercourse within the same ovulation period, he explained saying that “This is rare not only for Vietnam, but for the world."
The report said the twins are now two years old and one of them has thick, wavy hair while the other has thin, straight hair. The man's relatives pressured him to take the test because one of the babies looked strikingly different from him and the other child, the report said.