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  2. Single supplement - Wikipedia

    en.wikipedia.org/wiki/Single_supplement

    Vendors and agents in the travel industry quote package-deal and accommodation prices in terms of dollars per person when the customer travels in a group of two, that is, "twin share" or "double". The single supplement is a premium surcharge applied to a traveler who travels alone but will use a room that could fit two or more passengers.

  3. Superfecundation - Wikipedia

    en.wikipedia.org/wiki/Superfecundation

    Superfecundation is the fertilization of two or more ova from the same cycle by sperm from separate acts of sexual intercourse, which can lead to twin babies from two separate biological fathers. [1] [2] The term superfecundation is derived from fecund, meaning able to produce offspring.

  4. 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 ...

  5. Image credits: anothermegan #3. Me and my twin are complete opposites. I have a pixie cut and she has long hair. I am a musician and she is a mathematician. I am gay and she is straight.

  6. Gravidity and parity - Wikipedia

    en.wikipedia.org/wiki/Gravidity_and_parity

    Multiple births (twins, triplets and higher multiples) count as one pregnancy (gravidity) and as one birth. For example, a pregnant female who carried one pregnancy to term with a surviving infant; carried one pregnancy to 35 weeks with surviving twins; carried one pregnancy to 9 weeks as an ectopic (tubal) pregnancy; and has three living ...

  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. Conjoined twin Abby Hensel is now married - AOL

    www.aol.com/entertainment/conjoined-twin-abby...

    Conjoined twins Abby and Brittany Hensel first gained national attention when they appeared on "The Oprah Winfrey Show" in 1996. Now the sisters have reached a major life milestone: Abby is married.

  9. Monochorionic twins - Wikipedia

    en.wikipedia.org/wiki/Monochorionic_twins

    The presence of a "T-sign" at the inter-twin membrane-placental junction is indicative of monochorionic-diamniotic twins (that is, the junction between the inter-twin membrane and the external rim forms a right angle), whereas dichorionic twins present with a "lambda (λ) sign" (that is, the chorion forms a wedge-shaped protrusion into the ...