Twin

Twins are two offspring produced by the same pregnancy. Twins can either be monozygotic ("identical"), meaning that they can develop from just one zygote that will then split and form two embryos, or dizygotic ("fraternal"), meaning that they can develop from two different eggs; each are fertilized by separate sperm cells.

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.

Statistics

The twin birth rate in the United States rose 76% 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.

In Central Africa there are 18–30 twin sets (or 36–60 twins) per 1,000 live births. In Latin America, South Asia, and Southeast Asia, the lowest rates are found; only 6 to 9 twin sets per 1,000 live births. North America and Europe have intermediate rates of 9 to 16 twin sets per 1,000 live births.

Twin (production team)

Twin (sometimes written as TWIN) is a Swedish record production and songwriting team, consisting of Niclas Molinder and Joacim Persson, who are working in the genres of pop, R&B and rock.

Production and songwriting discography

2001

Charlotte Perrelli - Miss Jealousy

  • 02. "Miss Jealousy"
  • 06. "One Kiss Away"
  • 2002

    Amber - Naked

  • 07. "Sex Without Sex"
  • Da Buzz - Wanna Be with Me

  • 05. "Keep On Lovin' Me"
  • 07. "Wonder Where You Are"
  • Gloria Gaynor - I Wish You Love

  • 01. "Gotta Be Forever"
  • 05. "All the Man That I Need"
  • 2003

    No Angels - Pure

  • 02. "Eleven Out of Ten"
  • 08. "Feelgood Lies"
  • Sophie Monk - Calendar Girl

  • 05. "Love Thing"
  • 09. "Step Back to Love"
  • Play - Replay

  • 08. "11 Out of 10"
  • Snap! - The Cult of Snap!

  • 09. "When You're Near"
  • S Club 8 - Sundown

  • 09. "Sundown"
  • Belinda - Belinda

  • 01. "Lo Siento"
  • 2004

    American Juniors - American Juniors

  • 09. "Sundown"
  • Die Schlümpfe - The Smurfs

  • 02. "Einmal"
  • Charlotte Perrelli - Gone Too Long

  • 07. "All by Myself"
  • 10. "Tell Me"
  • Sandy Mölling - Unexpected

    Twin (disambiguation)

    A twin is one of two offspring produced in the same pregnancy.

    Twin may also refer to:

  • Twin, Alabama, a city in the United States
  • Twin (production team), a Swedish record production and songwriting team
  • Twin (windowing system), a windowing environment for text mode displays
  • Willows TWIN, a Windows emulator
  • Twin, a member of the Minnesota Twins baseball team
  • Flat-twin engine
  • V-twin engine
  • Straight-two engine, also referred to as a parallel-twin
  • Crystal twin, a crystal sample with two domains containing a twin boundary
  • Twin house, semi-detached housing
  • Twin towns and sister cities, towns and cities involved in town twinning
  • Gemini Twin, an American two-seat powered parachute design
  • Air Creation Twin, a French two seat ultralight trike design
  • See also

  • Twin paradox, a thought experiment
  • Twin prime, a type of prime number
  • Twin Range, a mountain range in New Hampshire
  • Twinning (disambiguation)
  • Twins (disambiguation)
  • Twin Sisters (disambiguation)
  • Gemini (disambiguation)
  • Podcasts:

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