Results 21 to 30 of about 346,692 (290)

Monozygotic Heterocaryotic Twinning [PDF]

open access: yesActa geneticae medicae et gemellologiae, 1974
Since the first publication in 1961, cases of monozygotic heterocaryotic twinning have been repeatedly found and a total of 14 observations can now be analysed. The mechanism involved in this type of twinning is yet uncertain and eventually is not identical in each case, the main uncertainty being to decide whether the chromosomal error affecting one ...
J. Lejeune, A. Aurias
openaire   +4 more sources

Increased DNA methylation variability in rheumatoid arthritis-discordant monozygotic twins

open access: yesGenome Medicine, 2018
Rheumatoid arthritis is a common autoimmune disorder influenced by both genetic and environmental factors. Epigenome-wide association studies can identify environmentally mediated epigenetic changes such as altered DNA methylation, which may also be ...
A. Webster   +10 more
semanticscholar   +1 more source

A dohányzási szokásokat befolyásoló környezeti tényezők egy- és kétpetéjű ikrek körében [PDF]

open access: yes, 2014
Introduction: Smoking habits are influenced by environmental (family, friends) and psychologic factors. Aim: To investigate environmental factors which influence the smoking habits of monozygotic and dizygotic twins.
Bakkne Nagy M,   +2 more
core   +1 more source

Psychiatric outcomes of bullying victimization: a study of discordant monozygotic twins

open access: yesPsychological Medicine, 2016
Background Bullying victimization in childhood is associated with a broad array of serious mental health disturbances, including anxiety, depression, and suicidal ideation and behavior.
J. Silberg   +5 more
semanticscholar   +1 more source

Epigenetic supersimilarity of monozygotic twin pairs

open access: yesGenome Biology, 2018
Background Monozygotic twins have long been studied to estimate heritability and explore epigenetic influences on phenotypic variation. The phenotypic and epigenetic similarities of monozygotic twins have been assumed to be largely due to their genetic ...
Timothy E. Van Baak   +23 more
doaj   +1 more source

Research with twins: The concept of emergenesis. [PDF]

open access: yes, 1982
Preliminaty findings from an on-going study of monozygotic twins reared apart (MZA) and data from a larger sample of twins reared together (MZT and DZT), indicate a surprisingly strong influence of genetic variation on aptitudes, psychophysiological ...
Lykken, David T.
core   +1 more source

Urticaria in Monozygotic and Dizygotic Twins [PDF]

open access: yesJournal of Allergy, 2012
Aim. To identify risk factors for urticaria, to determine the relative proportion of the susceptibility to urticaria that is due to genetic factors in an adult clinical twin sample, and to further determine whether the genetic susceptibility to urticaria overlaps with the genetic susceptibility to atopic diseases. Methods.
Thomsen, Simon Francis   +3 more
openaire   +5 more sources

From The Cover : Epigenetic differences arise during the lifetime of monozygotic twins

open access: yes, 2005
www.pnas.org/cgi/content/full/102/30/10604#otherarticles This article has been cited by other articles: E-mail Alerts . click here at the top right corner of the article or Receive free email alerts when new articles cite this article sign up in the box ...
Vaag   +22 more
semanticscholar   +1 more source

Obesity Is Associated With Low NAD(+)/SIRT Pathway Expression in Adipose Tissue of BMI-Discordant Monozygotic Twins.

open access: yesJournal of Clinical Endocrinology and Metabolism, 2016
CONTEXT Sirtuins (SIRTs) regulate cellular metabolism and mitochondrial function according to the energy state of the cell reflected by NAD(+) levels.
Sakari Jukarainen   +13 more
semanticscholar   +1 more source

Twinning rate trend in a population sample from the city of São Paulo, Brazil

open access: yesGenetics and Molecular Biology, 2003
A retrospective study was carried out on a sample consisting of 89,491 deliveries occurred from 1979 through 1998, in the city of São Paulo, SP, Brazil. These deliveries included 935 twin and 26 triplet births. The mean incidence per 1,000 deliveries was
Gloria M.D.D. Colletto
doaj   +1 more source

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