Results 51 to 60 of about 33,638 (243)

Dementia risk in women higher in same‐sex than opposite‐sex twins

open access: yesAlzheimer’s & Dementia: Diagnosis, Assessment & Disease Monitoring, 2020
Introduction Hormones may be one possible mechanism underlying sex differences in dementia incidence. We examined whether presumed differential prenatal hormone milieu is related to dementia risk by comparing dementia rates in same‐ and opposite‐sex ...
Jing Luo   +5 more
doaj   +1 more source

Utilizing twins as controls for non-twin case-materials in genome wide association studies. [PDF]

open access: yesPLoS ONE, 2013
Twin registries around the globe have collected DNA samples from large numbers of monozygotic and dizygotic twins. The twin sample collections are frequently used as controls in disease-specific studies together with non-twins.
Andrea Ganna   +9 more
doaj   +1 more source

Genetic and environmental links between self-reports and parent-reports of child personality [PDF]

open access: yes, 2018
Personality ratings have been consistently found to be reliable and moderately heritable, but interrater agreement between self- and other-report of personality are low-to-moderate, particularly in childhood samples. The current study aims to examine the
Savicki, Stephanie Louise
core   +1 more source

Economics of Twin Pregnancies in Dairy Cattle

open access: yesAnimals, 2021
Twinning in Holstein dairy cows has increased over time concurrent with increased milk production. Twinning in dairy cattle is not desirable due to the negative effects on both cows that calve twins and calves born as twins that result in economic losses
Victor E. Cabrera, Paul M. Fricke
doaj   +1 more source

Psychosocial twin cohort studies in Japan: the Keio Twin Research Center (KoTReC) [PDF]

open access: yes, 2019
The Keio Twin Research Center (KoTReC) was established in 2009 at Keio University to combine two longitudinal cohort projects — the Keio Twin Study (KTS) for adolescence and adulthood and the Tokyo Twin Cohort Project (ToTCoP) for infancy and childhood ...
Ando, Juko   +20 more
core   +2 more sources

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   +4 more sources

Prevention of multiple pregnancy

open access: yesMiddle East Fertility Society Journal, 2010
Monozygotic twins are two individuals derived from one sperm and one egg; dizygotic twins are individuals born together but originating from different eggs fertilized by different sperms.
P.G. Crosignani
doaj   +1 more source

Genetic Covariance Structure of Reading, Intelligence and Memory in Children [PDF]

open access: yes, 2009
This study investigates the genetic relationship among reading performance, IQ, verbal and visuospatial working memory (WM) and short-term memory (STM) in a sample of 112, 9-year-old twin pairs and their older siblings.
A Baddeley   +56 more
core   +5 more sources

Symptoms of major depression: Their stability, familiality, and prediction by genetic, temperamental, and childhood environmental risk factors [PDF]

open access: yes, 2017
Background: Psychiatry has long sought to develop biological diagnostic subtypes based on symptomatic differences. This effort assumes that symptoms reflect, with good fidelity, underlying etiological processes.
Aggen, Steven H., Kendler, Kenneth S.
core   +2 more sources

Congenital Chloride Diarrhea in Dizygotic Twins [PDF]

open access: yesPediatric Gastroenterology, Hepatology & Nutrition, 2013
Congenital chloride diarrhea (CLD) is a rare inherited autosomal recessive disorder. Mutations of the solute carrier family 26 member 3 gene cause profuse, chloride ion rich diarrhea, which results in hypochloremia, hyponatremia and metabolic alkalosis with dehydration. If a fetal ultrasound shows bowel dilatation suggestive of bowel obstruction, or if
Seo, Kyung Ah   +7 more
openaire   +2 more sources

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