Tag: "twin" at biology news
Twin Study May Ease Parents' Concerns About Late Talkers, Underscores Impact Of Environment On Language Development
...pment has been shown to be slightly delayedin some twin
studies, that was not the case in the MacArthur st...enetic impetus towardtalkativeness. The MacArthur twin
study helped us identify the linkbetween genetics and talkativeness as well as the link between envi...
Gene Shears In Cutting Edge Anti-Aids Trial
... CD4+ white blood cells taken from the uninfected twin
are equipped withthe anti-HIV ribozyme and then infused into the HIV-infected twin. The trial seeks first to establish that the ribozyme is safe and hasno side-effects on the patients, and secondly to find out how long the CD4+cells protected by t...
Genetic Risk Factors For Anorexia Nervosa Sought
...ini found that both members of a pair of identical twin
sisterswere substantially more likely to suffer fr...rexia than were both members ofa pair of fraternal twin
sisters. Additionally, immediate family members ofanorexic women were 10 times more likely to contra...
Women Can Inherit Drinking Problem Too, Study Finds
In the first major twin
study to compare genetic and environmental factors... 2,685 pairs of twins,all participants in an adult twin
study started in Australia in 1978 andmaintained by the Australian National Health and Medical Resea...
Research Shows That If One Identical Twin Is Prey To Nightmares, Often The Other
...r week-there was a 45percent chance that the other twin
would share the same trait. Withnonidentical twins, there was only a 20 percent chance. "Your geneticconstitution may make you more liable to nightmares," says Hublin. The findings also link frequent nightmares with mental illness.Examinatio...
Scientists Make Progress Toward Gene Therapy For HIV Infection
...ts studied 30 sets of identical twins in which one twin
wasinfected with HIV and the other was uninfected. HIV-fighting T-cells were takenfrom the healthy twin
and genetically altered to produce an extra receptor thathelps the cells recognize HIV-infected cell...
Study Shows First Significant Genetic Evidence For Schizophrenia Susceptibility
...ies of identical twins, for example, where onlyone twin
develops schizophrenia, the other twin
has a 46 percent chance ofhaving the disorder. That's higher than the 1 percent rate for the genera...
Combat Has Little Influence On Health Problems In Vietnam Vets
...g more than 4,700 pairs of identical and fraternal twin
brotherswho served during the Vietnam War, the res...erstand this because if we find differencesbetween twin
siblings, those differences must be due to influences from outsideof the family." Because the...
Largest Study Of Twins Shows Delay In Language Acquisition Has Strong Genetic
Component Among Children At Low End Of Developmental Scale
...ertwin also would fall into that group. But if the twin
was a fraternal there wasonly a 42 percent chance ...'s why it makes a whopping difference what kind of twin
theyare." There's further suggestion for the effects of genetics among this groupof childre...
Vulnerability To Compulsive Gambling Is Partly Inherited
...vior in identical twinpairs with that in fraternal twin
pairs, we can estimate the inherited andnoninherit...a particular behavior, the odds were high that his twin
also wouldexhibit that behavior. The odds were lower in fraternal twin
pairs, which areless similar ...
LSU Ag Center Program Focuses On Helping Animals Reproduce; Graduates Assist Humans, As Well
...ryo splitting, whichproduces genetically identical twin
animals from a single embryo. In 1982,researchers ...the program produced their first sets of identical twin
calves,or clones, from this technique. One of the newest assisted reproduction procedures i...
West Coast Measurements Confirm Asian Air Pollution Can Travel To U.S.
...le and in place for at leastseveral days, act like twin
gears pulling a high-speed conveyor belt laden withAsian air directly across the Pacific Ocean. On average the air reaches the WestCoast in about seven days, but it can take as few as four and as many as 10. "What we know for sure is that we see poll...
Genetics Not Significant To Developing Typical Parkinson's Disease
...d a genetic basis, bothindividuals in an identical twin
pair would be expected to develop the disease(sinc...t PDmost commonly occurred in only one member of a twin
pair, whether the pair wasidentical or fraternal. "Since purely genetic Parkinson's disease appears...
Bullying Behavior: Blame It On Bad Genes?
...rls and may be quitedifferent for each member of a twin
pair. The authors of the study say their work will lead toward identificationof specific genes associated with aggressive and non-aggressive antisocialbehavior and the biological pathways involved. They cite the potential role ofneurotransm...
New Genetic Findings In Attention Deficit Hyperactivity
... of the school-age population. ADHDis familial and twin
studies estimate heritibility (h2) at 80-90%. The mode oftransmission is unknown, but is likely to be due to many genes, each of smalleffect. The increased risk in 1st degree relatives is 5-6, suggesting thatrelative risks at individual loci will be ...
Genetic, Familial Factors Influence ADHD, Not Necessarily Sex Of Child
...r treatments in the future. "On the basis of these twin
studies,we believe ADHD has a genetic component, and if we could identify genes thatpredispose kids to ADHD, we might be able to develop better, more specifictreatments." Treatment for ADHD has been controversial. Child psychiatrists and pediatrician...
Genes play a bigger role in women's depression than in men's, twin study finds
... psychiatric disorders, includingdepression. Each twin
was unaware of how his or her twin
responded. Bierut and colleagues used the data from these interviews for their analyses.Because t...
Jefferson scientist hopes to answer the question, 'Why is it so hard to quit smoking?'
...ne,Dr. Leone explains. There have been "meaningful twin
studies showing thatidentical twins reared apart are more likely to smoke compared to fraternaltwins reared apart," he notes. "There's something dramatic going on that isinfluenced by biochemistry, but it's not the only thing going on. "We mi...
The wonderful world of waves
...weather forecasting. Instruments involvedinclude a twin
otter and Long-EZ aircraft; a small water area, twin
hull (SWATH)craft; air-sea interaction spar (ASIS) buoys; and subsurfaceinstruments. The most intens...
...s are different in other ways as well. The stalked twin
immediately begins replicating its DNA in preparation for another cell division whereas the swimmer delays replicating its DNA until later in the cell cycle, after it sheds its flagellum and forms a stalk of its own. The Caulobacter crescentus study ...
1 2 3 4