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Conjoined twins, popularly referred to as Siamese twins, [1] [2] are twins joined in utero. [ a ] It is a very rare phenomenon, estimated to occur in anywhere between one in 50,000 births to one in 200,000 births, with a somewhat higher incidence in southwest Asia and Africa. [ 5 ]
The human twin birth rate in the United States rose 76% from 1980 through 2009, from 9.4 to 16.7 twin sets (18.8 to 33.3 twins) per 1,000 births. [5] The Yoruba people have the highest rate of twinning in the world, at 45–50 twin sets (90–100 twins) per 1,000 live births, [6] [7] [8] possibly because of high consumption of a specific type of yam containing a natural phytoestrogen which may ...
The Hayes also have two sets of twins, Kevin and Kyle (eight years old at the time of the sextuplets' birth) and Kieran and Meghan (five years old). They are the only family in the United States to have two sets of twins and a set of sextuplets. [93] The family was the subject of a reality television show, Table for 12, on TLC in the U.S. [94]
The event in Twinsburg, Ohio, is the largest annual gathering of twins and multiples in the world. Kerissa says that identical twins “just get each other.” And there's comfort in that.
After identical twin sisters from Delaware married identical twin brothers from Tennessee, the children they are raising together share in a rare biological phenomenon. When identical twin sisters ...
By RYAN GORMAN Conjoined twins were born Thursday at an Atlanta hospital. Asa and Eli Hamby were born via C-section to parents Robin and Michael Hamby at the city's Northside Hospital, according ...
Dizygotic (fraternal) twins can be caused by a hyperovulation gene in the mother. [8] Although the father's genes do not influence the woman's chances of having twins, he could influence his children's chances of having twins by passing on a copy of the hyperovulation gene to them. Monozygotic (identical) twins do not run in families.
Doctors put the odds of having identical quadruplets at about one in 15 million. There are roughly 72 documented cases of spontaneous identical quadruplets in medical history. Spontaneous means ...