- published: 01 Apr 2016
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A twin is one of two offspring produced in the same pregnancy. Twins can either be monozygotic ("identical"), meaning that they develop from one zygote that splits and forms two embryos, or dizygotic ("fraternal") because they develop from two separate eggs that are fertilized by two separate sperm.
In contrast, a fetus which develops alone in the womb is called a singleton, and the general term for one offspring of a multiple birth is multiple.
The twin birth rate in the United States rose 76 percent from 1980 through 2009, from 18.9 to 33.3 per 1,000 births. The Yoruba have the highest rate of twinning in the world, at 45-50 twin sets (or 90-100 twins) per 1,000 live births, possibly because of high consumption of a specific type of yam containing a natural phytoestrogen which may stimulate the ovaries to release an egg from each side.
The world's highest rates of twinning are found across Central Africa, where there are 18-30 twin sets (or 37-62 twins) per 1,000 live births. In Latin-America and South Asia and South-East Asia the lowest rates are found; only 6-9 twin sets per 1,000 live births. North America and Europe have intermediate rates of 9–16 twin sets per 1,000 live births.
This is a list of notable twins, siblings resultant from a multiple birth.
Actors: Sharon Diane King (actress), Harwood Gordon (actor), Jorge Enrique Ponce (actor), Jorge Enrique Ponce (director), Jerome G. Villarin (miscellaneous crew), Ethan Le Phong (actor), Gary Jones (actor), Stephanie Roede (actress), David Joseph Solomon (miscellaneous crew), Chris ONeill (director), Chris ONeill (writer), Brandon Morrison (actor), Steven Lutsky (miscellaneous crew), Shani Vellvé (actress), Emily Petkus (actress),
Genres: Comedy, Fantasy, Short,Actors: Kristiina Elstelä (actress), Aake Kalliala (actor), Petteri Summanen (actor), Minttu Mustakallio (actress), Eeva Putro (actress), Jenni Rousu (costume designer), Juuso Räsänen (writer), Juuso Räsänen (producer), Juuso Räsänen (director), Jyrki Nevala (composer), Ville Vierikko (editor), Lassi Vierikko (actor), Dave Rukeratabaro (actor), Miika Räsänen (actor), Lauri Kangasniemi (actor),
Genres: Comedy, Family, Short,Actors: Deborah Hadfield (writer), Deborah Hadfield (director), Deborah Hadfield (producer), Shauna Shim (actress), Rebecca Loos (actress), Chris Brazier (actor), Stephen Groves (producer), John Mason (actor), Nick Kirk (editor),
Genres: Comedy, Romance, Short,Actors: Kial Natale (director), Kial Natale (actor), Lee Majdoub (actor), Natasha Wehn (actress), Ace Dixon (actor), Ace Dixon (composer), Michelle Kee (actress), Jodii Grono (actress), Dylan Innes (composer), Dylan Innes (director), Nicholas Porteous (actor), Aaron Kelsh (composer), Aaron Kelsh (actor), Chad Rimmel (actor),
Genres: Short,Actors: David Magdael (miscellaneous crew), Sonia Fritz (producer), Raúl Marchand Sánchez (editor), Frank Perozo (actor), Julio Ramos Velez (actor), Geronimo Mercado (composer), Ileana Ciena (producer), Oscar H. Guerrero (actor), José Ignacio Valenzuela (writer), Frances Lausell (producer), Efraín López Neris (actor), Maine Anders (actress), Eric Mathis (producer), Eyra Aguero Joubert (actress), Teresa Hernández (actress),
Genres: Drama, Mystery, Thriller,Actors: David Magdael (miscellaneous crew), Sonia Fritz (producer), Raúl Marchand Sánchez (editor), Frank Perozo (actor), Julio Ramos Velez (actor), Geronimo Mercado (composer), Ileana Ciena (producer), Oscar H. Guerrero (actor), José Ignacio Valenzuela (writer), Frances Lausell (producer), Efraín López Neris (actor), Maine Anders (actress), Eric Mathis (producer), Eyra Aguero Joubert (actress), Teresa Hernández (actress),
Genres: Drama, Mystery, Thriller,Actors: Sonny Burnette (actor), James Tackett (actor), Sebrina Scott (actress), Clint Parks (actor), Justin Heim (actor), Justin Heim (actor), Abigail DeHaan (producer), Abigail DeHaan (director), Abigail DeHaan (editor), Naomi DeHaan (director),
Genres: Drama,Actors: William Butler (director), William Butler (writer), William Butler (producer), Jordan Ladd (actress), Tom Rosenberg (producer), Gary Lucchesi (producer), Andrei Boncea (producer), Leslie Jordan (actor), Natasha Lyonne (actress), Patrika Darbo (actress), Joshua Leonard (actor), Newell Alexander (actor), Lance Henriksen (actor), Dendrie Taylor (actress), Rosemary Alexander (actress),
Plot: The psychiatric intern Clark Stevens comes to Cunningham Hall, a mental healthy facility administrated by Dr. Franks, for a training period before his graduation in medical college. He gets close to the resident Sara and to Ben London, a dangerous patient lodged in cell 44 in the basement of the clinic. Clark becomes intrigued with a boy, who seems to be a ghost, and finds that Dr. Franks does not use real medication in the patients. A further investigation shows hidden dark secrets in the clinic.
Keywords: anti-depressant, assumed-identity, asylum, axe, axe-in-the-shoulder, axe-murder, begins-with-a-flashback, biting-off-one's-tongue, bottle-of-pills, butcher-knifeActors: Wally Albright (actor), E.H. Calvert (actor), Donald Cook (actor), Richard Dix (actor), James Donlan (actor), Richard 'Skeets' Gallagher (actor), Robert Greig (actor), Harry Holman (actor), Guy Kibbee (actor), John 'Skins' Miller (actor), J. Carrol Naish (actor), Henry Otho (actor), Jed Prouty (actor), Jason Robards Sr. (actor), Luis Alberni (actor),
Genres: Drama, Western,Actors: Valdemar Andersen (writer), Alma Hinding (actress), Gunnar Sommerfeldt (actor), Aage Lorentzen (actor), Hugo Bruun (actor), Kai Lind (actor), Kai Lind (actor), Alexander Christian (director),
Genres: Crime,