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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 ...
This category contains articles on pairs of identical twins, and people who were born with an identical twin. For the article about multiple births, see Twin. For a list of all twins, identical or otherwise, see List of twins. For other uses of the term Twin, see Twin (disambiguation)
Diane Arbus photograph, Identical Twins, Roselle, New Jersey, 1967. Identical Twins, Roselle, New Jersey, 1967 is a noted photograph by photographer Diane Arbus from the United States. Since its debut Identical twins, Roselle, N. J., has become the image most closely associated with her large body of work. The photograph was chosen as the cover ...
The use of twins can improve the statistical power of a genetic study by reducing the amount of genetic and/or environmental variability. [1] " Identical twins" (monozygotic (MZ) twins) share virtually all their genes with each other, and "fraternal twins" (dizygotic (DZ) twins), on average, share about 50% of their genes with each other (about the same amount of sharing as non-twin siblings).
Triplet brothers at graduation. A multiple birth is the culmination of one multiple pregnancy, wherein 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.
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 ...
The Hayes also have two sets of twins, Kevin and Kyle (eight years old at the time of the sextuplets' birth) and Kieran and Meghan (five years old). They are the only family in the United States to have two sets of twins and a set of sextuplets. [93] The family was the subject of a reality television show, Table for 12, on TLC in the U.S. [94]
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 ...