Results 151 to 160 of about 13,822 (168)
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Coital rates and dizygotic twinning
Journal of Biosocial Science, 1972There is some evidence, mostly of an epidemiological nature, that coital rates may be positively associated with dizygotic twinning. It is suggested that this link is causal, in which case an explanation becomes available for some curious—and hitherto unexplained—features of dizygotic twinning rates by maternal age and legitimacy.
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Congenital biliary dilatation in dizygotic twins [PDF]
Pediatric Surgery International, 2004 Congenital biliary dilatation (CBD) of different types was recently noted in dizygotic twins. Our cases suggest the possibility of hereditary involvement in CBD. On the other hand, CBD discordance in six sets of monozygotic twins has been reported, which would suggest that the occurrence of CBD is not compatible with single gene control, although ...
Akihide Tanano +5 more
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Myelomeningocoele in dizygotic twins.
Nigerian journal of clinical practice, 2009Periconceptional use of folic acid can reduce a woman's risk of having a baby with a neural-tube defect and other congenital abnormalities.Case reports of babies OO both males, who were delivered at term by emergency caesarean section by a 21 year old woman.
Ugwu, RO, Eneh, AU
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Fetal alcohol syndrome in dizygotic twins
The Journal of Pediatrics, 1975A pair of fraternal twins with stigmata of the fetal alcohol syndrome are described. Apparently differences in susceptibility to the dysmorphogenic influence of ethanol caused one twin to be more severely affected than the other one. Both infants are growing poorly postnatally, and both are at risk for retarded development.
Katherine Kaufer Christoffel +1 more
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Gestation and birthweight in dizygotic twins [PDF]
The Lancet, 2002 Sir—Ruth Loos and colleagues (Aug 18, p 560) report that, within dizogotic twin pairs, same sex female twins have longer gestations than same sex male twins. They further note that in mixed sex twins, gestation is longer than for same sex male twins, and that the male co-twins are larger than those in same-sex pairs.
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Lifestyle factors in monozygotic and dizygotic twins
Genetic Epidemiology, 1988AbstractIn examining genetic influences on biological variables using twins, it may be important to examine the distribution between and within twin pairs of demographic and lifestyle factors that may themselves affect the biological variable being studied.
Dck Roberts +8 more
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The Sex Ratios of Monozygotic and Dizygotic Twins
Twin Research and Human Genetics, 2010AbstractFellman and Eriksson (2010) cited my suggestion that the sex ratio (proportion male) of monozygotic (MZ) twins is lower than that of dizygotic (DZ) twins (James 1975). Here I offer elaborations on and potential explanations for this.
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Sirenomelia and anencephaly in one of dizygotic twins
Teratology, 1986AbstractThe combination of sirenomelia and anencephaly was observed in a stillborn dizygotic twin. A review of the literature revealed no other patients reported to have both conditions. Various explanations concerning the genesis of sirenomelia, and also the combination with anencephaly, are discussed.
H. Schwaibold +3 more
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Williams Syndrome in One Dizygotic Twin
Pediatrics International, 1991Williams syndrome is a disorder of unknown etiology with a characteristic facial appearance, vascular disease and infantile hypercalcemia. Most cases are sporadic. We report the case of a dizygotic male twin with the Williams syndrome. This appears to be the first report of twins with only one affected.
Tomiko Hokama, John G. Rogers M.B.B.S
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Amyotrophic lateral sclerosis in dizygotic twins
Neurology, 1977A pair of dizygotic twins developed typical amyotrophic lateral sclerosis during adulthood. The concordance for this disease in these two patients of nonconsanguineous parentage with no family history of the disorder suggests the possibility of sublethal intrauterine injury to anterior horn cells.
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