End of a multiple pregnancy where two or more offspring are born
"Triplets" redirects here. For other uses, see Triplet.
Triplet brothers at graduation.
A multiple birth is the culmination of one multiple pregnancy, where in the mother gives birth to two or more babies. A term most applicable to vertebrate species, multiple births occur in most kinds of mammals, with varying frequencies. Such births are often named according to the number of offspring, as in twins and triplets. In non-humans, the whole group may also be referred to as a litter, and multiple births may be more common than single births. Multiple births in humans are the exception and can be exceptionally rare in the largest mammals.
A multiple pregnancy may be the result of the fertilization of a single egg that then splits to create identical fetuses, or it may be the result of the fertilization of multiple eggs that create fraternal ("non-identical") fetuses, or it may be a combination of these factors. A multiple pregnancy from a single zygote is called monozygotic, from two zygotes is called dizygotic, or from three or more zygotes is called polyzygotic.
Similarly, the siblings themselves from a multiple birth may be referred to as monozygotic if they are identical or as dizygotic (in cases of twins) or polyzygotic (for three or more siblings) if they are fraternal, i.e., non-identical.
Each fertilized ovum (zygote) may produce a single embryo, or it may split into two or more embryos, each carrying the same genetic material. Fetuses resulting from different zygotes are called fraternal and share only 50% of their genetic material, as ordinary full siblings from separate births do. Fetuses resulting from the same zygote share 100% of their genetic material and hence are called identical.[1] Identical twins are always the same sex.
^"Coefficient of relationship - ISOGG Wiki". isogg.org. Retrieved 2021-04-03.
A multiplebirth is the culmination of one multiple pregnancy, where in the mother gives birth to two or more babies. A term most applicable to vertebrate...
This is a list of multiplebirths, consisting of notable higher order (4+) multiplebirths and pregnancies. Twins and triplets are sufficiently common...
offspring at a time, although they may have twin or multiplebirths on occasion. In these large animals, the birth process is similar to that of a human, though...
other, reaching similar findings Multiplebirth, because having twins is sometimes called having "multiples" Multiple sclerosis, an inflammatory disease...
relatively high birth rates of twins have been documented. In 2008, Massachusetts has emerged as the most prolific producer of multiplebirths in the United...
The cause of spontaneous preterm birth is often not known. Risk factors include diabetes, high blood pressure, multiple gestation (being pregnant with more...
A breech birth is when a baby is born bottom first instead of head first, as is normal. Around 3–5% of pregnant women at term (37–40 weeks pregnant) have...
delivering a low birth weight baby. Women younger than 15 or older than 35 are at a higher risk to have a low-birth weight baby. Multiplebirths, where a mother...
involve multiple factors. Birth defects may be visible at birth or diagnosed by screening tests. A number of defects can be detected before birth by different...
multiplebirth is a multiple. Unrelated look-alikes whose resemblance parallels that of twins are referred to as doppelgänger. The human twin birth rate...
Birth rate, also known as natality, is the total number of live human births per 1,000 population for a given period divided by the length of the period...
the 19th century as births began to take place in hospitals. Multiple studies have been performed concerning the safety of home births for both the child...
Water birth is labor and sometimes delivery that occurs in water, usually a birthing pool. The American College of Obstetricians and Gynecologists does...
Silent birth, sometimes known as quiet birth, is a birthing procedure advised by L. Ron Hubbard and advocated by Scientologists in which "everyone attending...
Birth control, also known as contraception, anticonception, and fertility control, is the use of methods or devices to prevent unintended pregnancy. Birth...
Multiple sclerosis (MS) is an autoimmune disease in which the insulating covers of nerve cells in the brain and spinal cord are damaged. This damage disrupts...
A birth certificate is a vital record that documents the birth of a person. The term "birth certificate" can refer to either the original document certifying...
citizenship or only do in certain cases (e.g., inheriting multiple nationalities at birth). This may be by requiring an applicant for naturalization...
This is a list of notable twins, siblings resultant from a multiplebirth. Kaya and Sarp Akkaya (1980–) Shawn and Aaron Ashmore (1979–) Conrad (1923–2013)...
can have one or more gestations at the same time, for example in a multiplebirth. The time interval of a gestation is called the gestation period. In...
the placenta is shared by more than two twins (see multiplebirth), these are monochorionic multiples. Monochorionic twins occur in 0.3% of all pregnancies...
The Birth of a Nation, originally called The Clansman, is a 1915 American silent epic drama film directed by D. W. Griffith and starring Lillian Gish...
attention when she gave birth to the first surviving octuplets in January 2009. The circumstances of their high-order multiplebirth led to controversy in...
of birth (POB) or birthplace is the place where a person was born. This place is often used in legal documents, together with name and date of birth, to...
count. A multiple pregnancy (e.g., twins, triplets, etc.) is counted as 1. Parity, or "para", indicates the number of births (including live births and stillbirths)...
infancy. The extremely controversial circumstances of their high-order multiplebirth have led to debates in the field of assisted reproductive technology...
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