monozygotic twins


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Related to monozygotic twins: identical twins

mon·o·zy·got·ic twins

twins resulting from one zygote that at an early stage of development separated into independently growing cell aggregations giving rise to two individuals of the same sex and identical genetic constitution.
Synonym(s): enzygotic twins, identical twins, monochorial twins, monovular twins, uniovular twins
Farlex Partner Medical Dictionary © Farlex 2012

monozygotic twins

Identical twins Twins resulting from the division of a single fertilized egg, which usually share a common chorion and placenta; usually each has a separate amnion. Cf Fraternal twins.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

mon·o·zy·got·ic twins

(mon'ō-zī-got'ik twinz)
Twins resulting from a single zygote that at an early stage of development becomes separated into independently growing cell aggregations giving rise to two individuals of the same sex and identical genetic constitution.
Synonym(s): enzygotic twins, identical twins.
Medical Dictionary for the Health Professions and Nursing © Farlex 2012
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References in periodicals archive ?
Genetic determination of islet cell autoimmunity in monozygotic twin, dizygotic twin, and non-twin siblings of patients with type 1 diabetes: prospective twin study.
Genetics of type 1 diabetes
Students' answers spanned various topics, from the techniques used to visualize condensed chromosomes, to molecules that help regulate gene expression, to whether structures or the molecules associated with the condensed chromosomes were identical in the monozygotic twin samples.
Using an active-learning approach to teach epigenetics
The high concordance rates among monozygotic twins and recurrence in families support a strong genetic contribution to ASDs (Bailey et al.
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Yet despite evidence that heavy drinkers are at risk for osteoporosis, data from a monozygotic twin study contradict the notion that all alcohol is harmful.
Moderate alcohol intake may benefit women's bones
Observations in monozygotic twins. Archives of Ophthalmology, 112(7), 932-937.
The genetics of age-related macular degeneration. (Best Practice)
This is a rare disorder affecting 1 out of every 200 monozygotic twin pregnancies, 1 out of every 900 twin pregnancies, and 1 out of every 25,000 to 1,00,000 births.
A rare case of thoracopagus-conjoined twins with single heart
Epigenetic differences arise during the lifetime of monozygotic twins. Proc Natl Acad Sci USA 102:10604-10609.
Epigenetics: environmental instructions for the genome
On the other hand, the concordance of vitiligo among monozygotic twins participating in the survey was a mere 23%, indicating the disease also features a substantial non-genetic component.
Genetic breakthrough in vitiligo will pay dividends; new insights expected
Interestingly, twin pregnancies may present with one or two placentas, and although dizygotic twins must have two placentas, monozygotic twins can be either mono- or bichorionic.
Fetal DNA in maternal plasma in twin pregnancies
PietilAainen (Obesity Research Unit, Helsinki University Central Hospital), Antonio Vidal-Puig (University of Cambridge), Matej Oresic and colleagues used lipidomics to study the fat tissue biopsies among several sets of monozygotic twins.
How fat cells in the obese bring in inflammatory disorders
The exception to this is young-onset PD (onset before 50 years of age), where concordance in monozygotic twins was 100%, suggesting a primarily genetic basis (Tanner 2003).
Pesticides and Parkinson's disease--is there a link?
Using monozygotic twins as study subjects removes heritable factors from the analysis because they are completely matched for age and sex and closely matched for environment, culture, and education.
Monozygotic twin study: moderate alcohol use may help women's bones

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