In 2003 a study argued that many cases of triploidity arise from semi-identical twinning.

The other four pairs of twins — Ampheres and Evaemon, Mneseus and Autochthon, Elasippus and Mestor, and Azaes and Diaprepes — were also given " rule over many men, and a large territory.

There is overlap with unipolar depression and if this is also counted in the co-twin the concordance with bipolar disorder rises to 67 % in monozigotic twins and 19 % in dizigotic.

Such word sets can also be called etymological twins, and of course they may come in groups of higher numbers, as with, for example, the words wain ( native ) wagon ( Dutch ) and vehicle ( Latin ) in English.

The monozygotic twins twins also chose spouses and best friends who were more similar to their co-twins ' friends and spouses than did dizygotic twins.

The greatest risk for developing schizophrenia is having a first-degree relative with the disease ( risk is 6. 5 %); more than 40 % of monozygotic twins of those with schizophrenia are also affected.

' The mechanic twins seem to relate to this, realizing that they should make peace, also.

A mother typically gives birth to only one hippo, although twins also occur.

Notice also that even identical twins raised in a common family rarely show 100 % trait correlation.

In another kind of twin study, identical twins reared together ( who share family environment and genes ) are compared to fraternal twins reared together ( who also share family environment but only share half their genes ).

* Surgery has also been conducted to separate conjoined twins.

C ' Baoth intends to warp Leia and Luke to the Dark Side, and plans to corrupt also the two unborn twins.

Nut and Geb also produced another set of twins who became husband and wife: the divine Osiris and Isis, whose son was Horus.

In Latin the twins are also known as the Gemini or Castores.

However, males are also more susceptible than females to death in utero, and since the death rate in utero is higher for twins, it leads to female twins being more common than male twins.

Fraternal or dizygotic ( DZ ) twins ( also referred to as " non-identical twins ", " dissimilar twins ", " biovular twins ", and, in cases of females, sororal twins ) usually occur when two fertilized eggs are implanted in the uterus wall at the same time.

However, dizygotic twins may also look very different from each other.

Theater scholar Allean Hale notes that, born only sixteen months apart, they were “ as inseparable as twins, sometimes referred to as ‘ The Couple ’.” Rose and their black nursemaid, Ozzie, were Williams ' only companions as a child.

Mariah has referred to the twins with the nicknames " Roc and Roe " ( Rock and Roll ).

In 1997, when Boeing proposed to extend ETOPS authority for twins to beyond 180 minutes, Airbus proposed to replace ETOPS by a newer system, referred to as LROPS or Long Range Operational Performance Standards, which would affect all civil airliners, not just those with a twin-engine configuration with more than 180 minutes ETOPS.

One other explanation is that the boys referred to are the twins Castor and Pollux, both of whom appear in Greek mythology.

These are also referred to as the “ evil twins ”.

* 250 cc International-commonly referred to as twins or inters, these karts are powered by twin cylinder engines and usually have 6-speed sequential gearboxes.

The game was designed by two British brothers, Philip and Andrew Oliver, frequently referred to as the Oliver twins.

Most often, idioglossia refers to the " private languages " of young children, especially twins, the latter being more specifically known as cryptophasia, and commonly referred to as twin talk or twin speech.

Because of this, they are referred to as the " twins ".

If several twin crystal parts are aligned by the same twin law they are referred to as multiple or repeated twins.

Characters who are evil clones of good characters are usually referred to as " evil twins ".

A girl referred to in the book as " Claudia " ( which may be one or the two merged St. Croix twins ) was known as Know-It-All and was part of Generation Next, having merged herself with the team's computer system.

Simonides embellished his ode with so many references to the twins Castor and Pollux ( heroic archetypes of the boxer ) that Scopas told him to collect half the commissioned fee from them — he would only pay the other half.

Regarding spontaneous or natural monozygotic twinning, a recent theory posits that monozygotic twins are formed after a blastocyst essentially collapses, splitting the progenitor cells ( those that contain the body's fundamental genetic material ) in half, leaving the same genetic material divided in two on opposite sides of the embryo.

The twins were both found to be chimeras and to share all of their maternal DNA but only half of their father's DNA.

The chapter depicts " coaching how to do Euclid Bk I, 1 ", structured as " a reproduction of a schoolboys ' ( and schoolgirls ') old classbook complete with marginalia by the twins, who change sides at half time, and footnotes by the girl ( who doesn't )".

After twenty days a total of five pairs of twins had been born, half of them male and half of them female.

When jumelle ( twins ), or the turning up of similar cards on both sides, occurs, then the dealer takes half the stake.

In a 2009 article by Fox News called the twins " the Willie Nelson of pin-up girls interviewing the twins where they spoke of how they ( the twins ) use their “ seven and a half minutes each of fame ” to speak out for animals.

An example is where the twins are told by Daphne that she's bringing her boyfriend up to dinner and that he is half Polish and half French.

This etiologically explains why their constellation, the Discoursi or Gemeni, is only seen half the year, as the twins split their time between the underworld and Mount Olympus.

Nummo is actually a set of twins, male and female, and because the creation of the world required a sacrifice, humans can only be one half of the whole, male or female.

Michael was the seventh child of James and Beatrice, and the surviving half of a pair of twins.

It is possible, even in twin births, for one baby to receive more than half mutant mtDNA molecules while the other twin may receive only a tiny fraction of mutant mtDNA molecules with respect to wildtype ( depending on how the twins divide from each other and how many mutant mitochondria happen to be on each side of the division ).

More than half the cases of sirenomelia result in stillbirth and this condition is 100 times more likely to occur in identical twins than in single births or fraternal twins.

This is a developmental abnormality in which a fertilized egg splits as if to form identical twins, but one half becomes enveloped by the other, and an entire living organ system with torso and limbs can develop inside the host.