Tag: "twins" at biology news
Genetic factors strongly shape how peers are chosen
...stry (MATR), contains a population-based record of twins
from Virginia, North Carolina and South Carolina. ... that genetic factors increasingly impact how male twins
make choices as they mature and develop their own social groups. The road from genes to externaliz...
Progesterone injections do not prevent preterm birth in twin pregnancies
...ontaneous preterm birth, but not in women carrying twins
is a question that will be answered only when the mechanisms underlying preterm birth and the actions of 17-OHPC are better understood, they wrote, adding that additional research is needed to see whether 17-OHPC is effective in other conditions in w...
Ability to listen to 2 things at once is largely inherited, says twin study
... NIDCD researchers studied identical and fraternal twins
who attended a national twins
festival in Twinsburg, OH, during the years 2002 through 2005. A total of 194 same-sex pairs of twin...
Sour taste make you pucker? It may be in your genes
...ers tested 74 pairs of monozygotic (MZ, identical) twins
and 35 pairs of dizygotic (DZ, fraternal) twins
to determine the lowest concentration needed for each twin to correctly identify a citric acid solut...
Research team discovers gallstone gene
...within certain families. In particular, studies of twins
provide evidence of a genetic component that boosts risk levels. "We reckon that environmental influences, like the wrong diet, are 70 to 80 per cent responsible for the disorder," explains Lammert who works in the university hospital's Department I ...
Complex ART procedures more likely to lead to umbilical cord abnormality
...rs, scientists have known that both singletons and twins
conceived after fertility treatment do worse in te... the mid-eighties, said Mrs. Delbaere, we analysed twins
born between 1985 and 2004. The scientists compared cord characteristics from 2119 spontaneousl...
First baby is born after oocytes were matured in the lab and frozen
...ncies, with the exception of one, which started as twins
but became a singleton pregnancy due to spontaneous reduction. Dr Holzer said he believed that adjusting the media in which the immature oocytes were matured in the laboratory was probably responsible for the improved success rate as the trial pro...
Time-lapse recordings reveal why IVF embryos are more likely to develop into twins
...g extended culture are more likely to develop into twins
than those created via natural conception. Further...gy today (Monday 2 July) that about three pairs of twins
per thousand deliveries occurred as a result of natural conception, but many more were born after IV...
Hyperactivity and academic achievement could be linked by genetics
...nd achievement in nearly 2,000 7-year-old pairs of twins
taking part in the U.K.-based Twins Early Development Study. In the study, both parents and teachers provided ratings of twins' hyperactive behavior problems (e.g., restlessness, fidgeting, distractibility, impulsivity, and attention span). Academic ...
1 month post launch, Interactive Autism Network reports 13,000 participants
...luding: six sets of triplets, 37 sets of identical twins
and 157 sets of fraternal twins Researchers from institutions across the country have already begun to access IAN data to: Supplement and enhance current research studies Compare and validate existing research results obtained from s...
Spouse may 'drive you to drink' but also can protect you from alcohol
...cal Research in Brisbane, Australia, studied 5,974 twins
born between 1902 and 1964 who were part of the Australian Twin Register. They also spoke with 3,814 of those twins' spouses for the study, published in the May issue of the journal Alcoholism: Clinical & Experimental Research. "As they say, 'like ...
Good behavior, religiousness may be genetic
... behave in certain ways," says Koenig. "The use of twins
in the current study allowed for an investigation of the genetic and environmental influences on this type of behavior." This research is another example of the way that genes have an impact on behavior. "Society as a whole assumes that home envir...
Epigenetic studies will provide a better understanding of disease
..., why two cloned organisms are not the same or why twins
develop illnesses of distinct genetic origin. Epigenetic studies promise not only to have a direct impact on health and our understanding of the relations between the environment and genetics but also to provide an explanation of basic aspects of cel...
New bird, bat species revealed by extensive DNA barcode studies
... "some pairs of listed species now shown to be DNA twins
may be relatively young species and prove different over time." As well, he notes, there is no universal scientific agreement on what defines a species. The Batcodes "Wouldn't you think we'd have all of the world's 5,500 mammals identified by n...
Studies identify DNA regions linked to nicotine dependence
... tend to cluster in families, and large studies of twins
previously concluded that the clustering is partly related to genetic factors. An important aspect of these latest studies is that rather than comparing smokers to non-smokers, the researchers compared addicted smokers to non-addicted smokers. "You...
A unique twin study on the increased cardiometabolic risk in obesity
... a metabolomic analysis of lipids in 14 monozygous twins
highly discordant for obesity, and 10 control pair...This can best be done by studying monozygotic (MZ) twins
discordant for obesity. MZ twins
are genetically identical at the sequence level and any differences...
Parents' genes, not parents' arguing, may cause children's conduct problems
...iversities looked at this question, studying 1,045 twins
and their 2,051 children. Some of the parents were identical twins
and shared all of their genes and some were fraternal and shared only half of their genes. The stud...
Stanford-led study closes in on genes that may predispose some people to severe depression
... by genetics by studying patterns of depression in twins
and families. No single gene is thought responsible for determining the risk for developing depression. Instead, multiple genes are probably interacting to create what amounts to a genetic baseline level of risk. On top of that baseline, environmenta...
New approach to BSE successful in lab
...t shape. When there is contact with their diseased twins
they change their shape, also becoming diseased. The result is an irresistible chain reaction. The malformed prion proteins can be deposited in the brain, thereby destroying brain tissue. Prion diseases are always fatal, often, however, not until mon...
Sea urchin genome is a biology boon and a computational feat
...a urchin, from something as basic as how identical twins
form to in vitro fertilization procedures," Wessel said. "With a complete map of the urchin's DNA, we can now learn more quickly and easily how each process works during development." Sorin Istrail, a Brown professor of computer science and director...
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