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.

monozygotic twins

two offspring born of the same pregnancy and developed from a single fertilized ovum that splits into equal halves during an early cleavage phase in embryonic development, giving rise to separate fetuses. Such twins are always of the same sex, have the same genetic constitution, possess identical blood groups, and closely resemble each other in physical, psychological, and mental characteristics. Monozygotic twins may have single or separate placentas and membranes, depending on the time during development when division occurs. Monozygotic twinning occurs with relatively uniform frequency in all races, is unaffected by heredity, and represents approximately one third of all twin births. Also called enzygotic twins, identical twins, true twins, uniovular twins. Compare dizygotic twins. See also Siamese twins.
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Monozygotic twins

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.

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.

monozygotic twins

twin babies derived from a single fertilized ovum

monozygotic

pertaining to or derived from a single zygote (fertilized ovum); said of twins.

monozygotic twins
see monozygotic twins.
References in periodicals archive ?
Congential scoliosis in one of monozygotic twins a case report.
Some years ago, one (Twin A) of a pair of apparently monozygotic twin girls (Twins A and B) approached the genetic counselling clinic for a consultation regarding predictive testing for HD.
Kawasaki disease associated with measles virus infection in a monozygotic twin.
To systematically detect the presence or absence of regional fluctuation in the apparent fractional fetal DNA concentrations, we first determined the random variation in values that could be observed even when no fluctuation was expected, such as with monozygotic twins.
The argument from the example of monozygotic twins has two parts.
Factors associated with exercise lifestyle--a study of monozygotic twins.
Phenotypically concordant and discordant monozygotic twins display different DNA copy-number-variation profiles Am J Hum Genet 2008;82: 763-771.
For ASD, probandwise concordance for monozygotic twins was 77% for 45 male pairs and 50% for 9 female pairs; however, concordance rates for dizygotic twins were 31% for 45 male pairs and 36% for 13 female pairs.
Cantrell's pentalogy in the first twin from a monozygotic twin pregnancy: a case presentation and literature review
In fact, they found coronary flow rate was significantly lower in dizygotic twins with a history of major depression compared to their fraternal twins without major depression, but there was no significant flow rate difference between monozygotic twins discordant for the disorder.