monozygotic twins


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Related to monozygotic twins: identical twins
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mon·o·zy·got·ic twins

n., pl. gemelos monocigóticos con características genéticas idénticas.
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References in periodicals archive ?
Genetic evidence for monozygotic (identical) twinning in mammalian species is rare in the literature, Here we report what may be the first pair of monozygotic twins identified in a wild caniform carnivore, the grey wolf (Cams lupus).
Monozygotic twin wolves with divergent life histories
a) The concordance rate for systemic sclerosis is nearly 100% among monozygotic twins.
Seminar in advanced rheumatology: selected proceedings of a live symposium held March, 2008 bulletin of the NYU hospital for joint diseases
In studies of male twins, monozygotic twins (single egg) are more likely than are dizygotic twins (two eggs fertilized by two different sperm) to be concordant for homosexuality.
Genes, hormones, and sexuality
Since epigenetic mechanisms in gene expression do not involve changes in DNA sequence, and involve environmental inputs, epigenetics may explain many clinical aspects of the idiopathic mental disorders (15) like a high degree of discordance of monozygotic twins for these disorders; the relatively late age of their onset; differences between the sexes in the rate and course of illness; fluctuations in the course of illness; and parent-of-origin effects, i.e., the phenomenon that in some idiopathic mental disorders risk to offspring depends on the sex of the affected parent.
The role of epigenetics in mental disorders
For monozygotic twins, the risk is similar to the age-related risk in a singleton gestation.
Managing risk--to mother and fetuses--in a twin gestation: begin by determining chorionicity. Discuss the risks of a multiple gestation, prepare parents for premature delivery, and monitor fetal growth as indicated
Most doctors believe that conjoined twins start off like other monozygotic twins, but the zygote doesn't split completely, so the embryos remain joined as they grow.
Together forever? Twins who ape physically connected to each other face a difficult decision: to separate or remain joined for life
Higher prevalence rates are seen in first-degree relatives (5%-15%), monozygotic twins (70%-75%), and patients with other autoimmune disorders.
Changing face of celiac disease may cloud DX
I consider the argument, thought to clinch the moral case for use of a human embryo solely as a means, that (i) only a human individual can be a person, (ii) because it can happen at any time before formation of the primitive streak that an embryo splits into monozygotic twins, no embryo in which the primitive streak has not formed is a human individual, and therefore (iii) no embryo in which the primitive streak has not formed is a person.
The nonindividuation argument against zygotic personhood
"Although ovarian transplantation between monozygotic twins will be rare, the demonstration that ovarian function can be restored and that natural conception and successful pregnancy can be achieved after transplantation of ovarian tissue may have broader implications for preserving fertility in young women, such as those who require potentially sterilizing treatment for cancer," the authors said in the report.
First-ever birth after receiving ovarian tissue transplant gives hope to restoring a woman's fertility
If major psychiatric disorders have a strong genetic component, monozygotic twins will be highly concordant for the disorder; dizygotic twins will show some level of concordance but not to the same extent as the monozygotic twins.
Genetic susceptibility to psychiatric disorders
Take the case of monozygotic twins who share exactly the same genes and were formed in the same womb at the same time.
Enough already: a leading environmentalist makes a foolish case against technological innovation
Depending on the time of developmental division, monozygotic twins may have a monochorionic placenta or a dichorionic placenta.
Ultrasound and Twin-twin Transfusion Syndrome

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