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Tag: "siblings" at biology news

Same-sex mating by fungi spawned infection outbreak, evidence suggests

...o C. gattii strains in Vancouver Island are either siblings or that one is the parent and the other the progeny. "Given that the minor outbreak form also exists in multiple locations in Australia, while the major outbreak form has only been found in the Pacific Northwest, we favor the hypothesis that the min...

Looking for the genes that affect a person's level of response to alcohol

...esearchers examined 238 18-to-29-year-old pairs of siblings (about 365 people) who had at least one alcohol-dependent parent. All of the pairs of siblings had had some experience with alcohol use themselves, but were not yet alcohol dependent. The goal w...

First wolverine radio-collared in Pacific Northwest

... Aubry. "It's likely that her parents and possibly siblings are in the same general area, so chances are good that we will collar additional individuals in the traps we've set." Rohrer and Fitkin will continue to monitor three wolverine traps placed before snowfall in locations where wolverines had previou...

Pittsburgh researchers discover that certain chemicals in the blood may indicate brain injury

... an unsafe environment. This also can help protect siblings who may be living in the same violent environment." The study involved 98 infants who presented to Children's Hospital of Pittsburgh's Emergency Department with one of the following symptoms: an apparent life-threatening event (near-SIDS), vomiting ...

Gene variation increases SIDS risk in African Americans

... add: "Infants with acute life-threatening events, siblings of SIDS victims, and couples that experience infertility or fetal demise." ...

Ritalin packs punch by elevating norepinephrine, suppressing nerve signal transmissions

...students who solicit prescriptions from friends or siblings diagnosed with ADHD and use the drug to postpone fatigue and stay alert and focused while studying for exams or completing projects, Waterhouse said. ...

New genes implicated in rheumatoid arthritis

...ts strong genetic component, RA's occurrence among siblings seems to be random. In the quest to identify disease-specific gene expression profiles in patients with RA, researchers at the University of Michigan Medical Center turned to an ideal population: genetically identical, disease-discordant twins. T...

Down syndrome: It's not just the age factor

...wn Syndrome is also dependent on how many existing siblings the child has and how big the gap is between the child and his immediate preceding sibling. The research is published in Springer's journal Naturwissenschaften this week. Neuhäuser and Krackow reviewed and analysed data from 1953 and 1972 (before a...

Tiny clue reveals new path toward heart disease

...nt -- of a group of families in which at least two siblings had early onset coronary artery disease, looking for regions of "linkage" where DNA variations appeared to be inherited along with the disease. They found just such a region: a small section of the long arm of chromosome 3 where just a handful of gen...

Researchers discover genetic cause for word-finding disease

... in two unrelated families in which nearly all the siblings suffered from PPA. In the first family, three out of four siblings had the disease; in the second family, two out of three had it. These particular mutations were not ...

Twin studies reveal genetic components leading to cardiac and kidney disease

... difference in the frequency of traits between the siblings in each MZ and DZ twin pair establishes what is called the index of heritability. The human genome has three billion base pairs and about 30,000 genes. O’Connor and his research team have looked at about 900 of these 30,000 genes. "We’re jus...

A rarity among arachnids, whip spiders have a sociable family life

...ids, mothers caress their young with long feelers, siblings stick together until they reach sexual maturity, a...h their long, thin whiplike front legs and how the siblings congregate in social groups. "I was amazed at how incredibly interactive the groups are," said Ray...

The penalty of having a sister -- why sibling sex matters for male saiga antelopes

...pment in male twins, its existence is clear. "When siblings in a litter vary in sex, maternal investment should be sex-specific, meaning that the male foetus grows bigger than the female. However, it seems there are limitations in the ability of the mother to provision mixed twin litters in the womb," she sai...

Study suggests some drug resistance to influenza B medications

... three were probably infected through contact with siblings shedding the mutant viruses. “Continued surveillance for the emergence or spread of neuraminidase inhibitor–resistant influenza viruses is critically important,?the authors write. “Further evaluation of the biological properties of neuraminidase i...

Plants recognize their siblings, biologists discover

...ferences between groups of strangers and groups of siblings only occurred when they shared a pot, the root interactions may provide a cue for kin recognition.” Though they lack cognition and memory, the study shows plants are capable of complex social behaviours such as altruism towards relatives, says Dud...

Breakthrough developments in rheumatoid arthritis reported

...ave been amassing a genetic database complete with siblings with rheumatoid arthritis (and some family members without it) in an attempt to single out those genes that are involved in the autoimmune process. In fact, in 2004, they identified a gene called PTPN2 that confers a two-fold risk for rheumatoid arth...

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