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  2. Twin - Wikipedia

    en.wikipedia.org/wiki/Twin

    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 ...

  3. Twins and handedness - Wikipedia

    en.wikipedia.org/wiki/Twins_and_handedness

    If the parents are both right-handed, in dizygotic and monozygotic twins there is a 21% chance of one being left-handed. If one parent is left-handed, in DZ and MZ twins there is a 57% chance of one being left-handed. If both parents are left-handed, it is almost certain one twin will be left-handed. [citation needed]

  4. Inside the life of two sets of identical twins, who now live ...

    www.aol.com/news/inside-life-two-sets-identical...

    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 ...

  5. Zygosity - Wikipedia

    en.wikipedia.org/wiki/Zygosity

    The word zygosity may also be used to describe the genetic similarity or dissimilarity of twins. [6] Identical twins are monozygotic, meaning that they develop from one zygote that splits and forms two embryos. Fraternal twins are dizygotic because they develop from two separate oocytes (egg cells) that are fertilized by two separate sperm.

  6. Identical twins of the ‘Ask Reddit’ community recently shared what are the main differences between them and their sibling, showing that the dissimilarities can range from a unique mole to one ...

  7. Monoamniotic twins - Wikipedia

    en.wikipedia.org/wiki/Monoamniotic_twins

    Monoamniotic twins are identical or semi-identical twins that share the same amniotic sac within their mother's uterus. [1] Monoamniotic twins are always monochorionic and are usually termed Monoamniotic-Monochorionic ("MoMo" or "Mono Mono") twins. [1] [2] They share the placenta, but have two separate umbilical cords.

  8. Rare Semi-Identical Twins Were Born in Australia—Here ... - AOL

    www.aol.com/news/rare-semi-identical-twins-were...

    There’s a “third form of twinning,” say researchers. For premium support please call: 800-290-4726 more ways to reach us

  9. List of twins - Wikipedia

    en.wikipedia.org/wiki/List_of_twins

    Ella Harper, unnamed twin brother died shortly after birth; Gordon Hayward, twin sister; Jon Heder, identical twin brother; William Randolph Hearst, twin died as an infant; Marilu Henner, twin sister; John Hensley, fraternal twin sister; Alex Hirsch, twin sister; Ryan Howard, twin brother; Sabrina Ionescu, twin brother; Urtzi Iriondo, identical ...