Sentences with phrase «monozygotic twins»

In their study of monozygotic twin pairs in the Add Health sample, the associations of sleep duration with several outcomes including suicidal ideation, delinquency, and drug use were reduced to non-significance when genetic and shared environmental factors were accounted for in the model.

19 Table 5 documents that the number of monozygotic twin pairs concordant for transsexualism is greater than that of dizygotic twin pairs.

Bidirectional influences between maternal parenting and children's peer problems: a longitudinal monozygotic twin difference study.

Global transcript profiles of fat in monozygotic twins discordant for BMI: pathways behind acquired obesity

Monozygotic twins discordant for major depression: A preliminary exploration of the role of environmental experiences in the aetiology and course of the illness

Of course, the approach won't work with monozygotic twins, whose genes are identical.

The most significant data entry, however, is the low number of concordant monozygotic twin pairs.

Because they have their own placentas, fraternal twins are not at risk for some of the conditions that affect monozygotic twins, such as TTTS or monoamniotic twins.

She is the divorced mother of 10 - year - old monozygotic twins, M and J.

Vanishing Twin Syndrome occurs with equal frequency in monozygotic and dizygotic twins, although the complications of sharing a placenta between monochorionic monozygotic twins may contribute to the condition.

«Virtual twins share environments but not genes,» she says, «and that makes them the inverse of monozygotic twins reared apart.»

We can analyze the individual differences in sensitivity to environmental factors using monozygotic twins.

In a recent twin study, «Physical activity and dietary intake in BMI discordant identical twins» physical activity and food habits were measured in 16 female monozygotic twins (identical twins from the same single embryo and share the same genome) with a mean BMI discordance of about 4.

Also included in the project are Sophie and Polly, a pair of monozygotic twins who are so identical they have matching fingerprints meaning their DNA is virtually indistinguishable.

For example, it is known that when monozygotic twins are reared apart later in life, their unique experiences shape their psychopathologies, regardless of the fact they both share the same genetic makeup and that they both experienced the same original family environment.

[20] It removes the possible influence of dominance and epistatic effects which, if present, will tend to make monozygotic twins more similar than dizygotic twins and mask the influence of shared environmental effects.

It could be suggested that a greater similarity in attachment style can also facilitate bonding between siblings and therefore monozygotic twins are probably more attached to each other than other sibling types are.

MZ = Monozygotic twins, DZ = Dizygotic twins, NT = Non-Twin siblings, SI = Sibling, P = Romantic Partner; √ = Prediction full supported, (√) Prediction partially supported, O = Prediction not supported.

Viding, Fontaine, Oliver, & Plomin [56], in their study on monozygotic twins, found that negative parental discipline operates as a non-shared environmental risk factor for developing CP during the transition to early adolescence, but not for the development of CU traits.

Negative parental discipline, conduct problems and callous — unemotional traits: Monozygotic twin differences study

However, the rate is vastly different, with monozygotic twins being significantly more rare.

Bruder, Carl E.G. et al. «Phenotypically Concordant and Discordant Monozygotic Twins Display Different DNA Copy - Number - Variation Profiles.»

If genetic effects are important for the trait in question, then correlation or concordance between monozygotic twins should be significantly greater than that between dizygotic twins.

It examines a large sample of monozygotic twins in Denmark to see if their cultural activity was related to their teacher - given GPA, exam - based GPA, and rate of completing secondary school.

While previous studies had found strong evidence for shared environment effects on attachment styles of twins and sibling - pairs, a study of Fearon, Shmueli - Goetz, Viding, Fonagy, and Plomin (2014) supports the assumption of a primary genetic influenced similarity in attachment style, which means that attachment styles of monozygotic twin pairs are more similar to each other than those of DZ or NT siblings.

Monozygotic twins are susceptible to certain conditions which can threaten the health of one or both babies.

Since some monozygotic twins have one placenta, this can make it difficult to determine zygosity in utero.

It also taught me that identical is a misleading word when referring to monozygotic twins.

There is a small (1.5 %) chance at having a monozygotic twin (identical twins) as the transferred embryo may split after transfer.

In this case, it is not just that multiple embryos may be implanted; the transferred embryos can sometimes divide and lead to monozygotic twins.

Monozygotic twins are particularly surprising since no one is quite sure what can cause an egg to split after conception.

Monozygotic twinning is the name given to twins that are born from one fertilized egg and share 100 % identical DNA.

* Birth Defects — Identical or monozygotic twins (from one egg that splits into two) have double the risk of congenital defects of dizygotic twins (from two fertilized eggs).

The first is when an egg splits after fertilization, creating identical or monozygotic twins.

Monozygotic twins can be two girls or two boys.

Differential parenting and risk for psychopathology: a monozygotic twin difference approach.

Identical twins, or monozygotic twins, come from the same egg that will later split in two.

The study's cohort of Quebec twins, which included 223 sets of monozygotic twins (with an identical genetic code) and 332 sets of fraternal twins, made it possible to determine whether the individual differences observed in proactive and reactive aggression were due to genetic or environmental factors.

The surprising finding is that, on average, the monozygotic twins in the University of Washington study, both those with chronic fatigue and those without, fall below normal in exercise capacity.

Monozygotic twins can easily confuse a stranger, but sometimes a clue lies in their mirror - image features, such as hair that whorls in opposite directions or birthmarks on opposite sides of faces.

Yet in this particular set of monozygotic twins, one sister had the symptoms and the other did not.

Fraternal twins may be of opposite sexes; monozygotic twins are of the opposite sex only in the rarest circumstances.

The risk of developing autism, according to one study, is more than 90 percent heritable because the concordance for autism is high in monozygotic twins and low in dizygotic twins.