Conjoined twins is fusion, in which a fertilized egg completely separates, but stem cells (which search for similar cells) find similar stem cells on the other twin and fuse the twins together. Conjoined twins share a single common chorion, placenta, and amniotic sac, although these characteristics are not exclusive to conjoined twins, as there are some monozygotic but non-conjoined twins who also share these structures "in utero". The most famous pair of conjoined twins was Chang and Eng Bunker (Thai: อิน-จัน, In-Chan) (1811–1874), Thai brothers born in Siam, now Thailand. They traveled with P.T. Barnum's circus for many years and were labeled
Carlson Twins Carlson Twins Kyle and Lane Carlson (born December 24, 1978) are identical twin brothers known as the Carlson Twins. The Carlson twins work together as male fashion models. The twins were born in Stillwater, Minnesota, United States, Kyle six minutes after Lane. The Carlson twins grew up with two older siblings, Aaron and Michelle, and a younger sister, Lynnaya. Their mother Judy was a nursing assistant and their father Rick owned a construction company. The brothers attended Stillwater High School and both graduated from Winona State University, majoring in business. Kyle married model Jessica Hall in 2008, and they had