Results 201 to 210 of about 355,875 (268)

Traces of embryogenesis are the same in monozygotic and dizygotic twins: not compatible with double ovulation

open access: yesHuman Reproduction, 2009
Common knowledge of over a century has it that monozygotic and dizygotic twinning events occur by unrelated mechanisms: monozygotic twinning ‘splits’ embryos, producing anomalously re-arranged embryogenic asymmetries; dizygotic twinning begins with ...
Charles E Boklage
exaly   +4 more sources

The Sex Ratios of Monozygotic and Dizygotic Twins

open access: yesTwin Research and Human Genetics, 2010
AbstractFellman 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.
William H. James
openaire   +3 more sources
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Dizygotic twins with myelomeningocele

The Indian Journal of Pediatrics, 2003
Among the neural tube defects incidence of spinabifida and myelomeningocele is less in twins compared to singletons. This article reports a case of dizygotic twins with myelomeningocele, a rare occurrence. Possible association of twining and neural tube defects and its impact on genetic counseling in such cases has been discussed.
Ghanshyam, Das   +2 more
openaire   +2 more sources

Chimerism in monochorionic dizygotic twins: Case study and review

American Journal of Medical Genetics, Part A, 2013
Ramen H Chmait   +2 more
exaly   +2 more sources

Monochorionic dizygotic twins in a spontaneous pregnancy: a rare case report

Journal of Maternal-Fetal and Neonatal Medicine, 2009
Michael Y Divon
exaly   +2 more sources

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