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Tag: "select" at biology news

Growing crops to cope with climate change

...earchers and plant breeders will find it easier to select variations that will thrive in the UK environment but will also flower earlier, coping with hotter summers. Dr Laurie commented, "Although our research has been on barley we know from observation that other crops show similar variation in the way t...

Virginia Tech helping to develop higher quality, disease-resistant wheat varieties

...chers will be identifying and using DNA markers to select varieties possessing genes conferring durable resi...same chromosome region as the trait of interest to select for genes controlling useful agronomic traits. Breeders use these molecular markers to increase the ...

Attractive birds more immune against bird flu

...his leads to the question of why evolution did not select the same appearance and good health for all individuals. Is there something in the environment that is constantly changing and can govern the genetics of appearance and health, leading, instead, to diversity? "More and more evidence indicates that ...

'Genetic network' guards against lethal DNA damage

...we discovered in yeast could also help researchers select the human versions of these genes suitable as targets for the development of new, more targeted and less toxic cancer therapies," Boeke said. The goal of the Hopkins study was to identify pairs of genes that, while different, play redundant roles in...

BioMed Central launches Biology Direct

... will almost autonomously run the journal: one can select one's own reviewers and, in most cases, they will be drawn from the editorial board itself, thus ensuring a high standard of review. An advantage of selecting one's own reviewers is the ability to choose people who will at least understand the articl...

Scientists identify molecular structure of key viral protein

... Hendra and Nipah viruses, which are classified as select agents of concern for biodefense. The pre-fusion structure of the F protein combined with the structure of the protein in its post-fusion state, which was determined and reported earlier in 2005 by this same research team, gives scientists a complet...

US woman gives birth to baby from world's first frozen donor egg bank

...reate the family they have been longing for. Women select a familial "match" from the donor eggs in the bank, and the eggs are shipped anywhere in the world to be thawed, fertilized and transferred as an embryo to the waiting woman who wishes to experience the pregnancy and birth of her baby. "We're very h...

Viral genetic differences are possible key to HIV dementia

... particular viral genotypes may lead physicians to select for antiretroviral regimens that cross the blood-brain barrier into the CNS most efficiently." Or, he speculates, "we might actually try to design a drug to target these genetic variants that are responsible for the neurological damage." Pillai no...

Chromosomal abnormalities in sperm higher after vasectomy reversal

...sor Sukchareon, since the female genital tract may select the best sperm for fertilisation. "But this is still uncertain, and until we know more it would probably be safer to freeze ejaculated sperm before vasectomy. We need a lot more evidence and research on this issue before we can be certain of avoi...

First-ever genomic test predicts which lung cancer patients need chemotherapy to live

...coming trial is the first to use a genomic test to select treatment options for individual lung cancer patie... not only to predict patient outcomes, but also to select the individual drugs that will best match a tumor's molecular makeup, Ginsburg said. ...

Trials for new drug to overcome HIV

... turns out to be non-toxic, easy to use and not to select for resistance, it will find good use," he says. ...

Clot-busting drug helps revive cardiac arrest patients

...he study supports the use of fibrinolytic drugs in select cases of cardiac arrest where patients don't respond to standard therapy, and it reinforces the need for additional studies of this therapy," said Bozeman. Tenecteplase is approved by the Food and Drug Administration for treating patients suffering ...

Scientists use an 'ice lolly' to find polar bacteria in their own backyard

...ved the formation of an 'ice finger' (or lolly) to select for bacteria which will adsorb to ice. These bacteria were then cultured and identified using their DNA. The bacteria can modify ice and water in a number of ways. One of the species identified, Chryseobacterium sp., demonstrated Ice Recrystallisat...

Embryo tests give parents the choice

...d that almost one-quarter of US clinics use PGD to select an embryo that would be an immunological match for a sick sibling. It also showed that PGD is not error-free: 21 per cent of clinics interviewed for the study knew of cases where children had been born with diseases that PGD was supposed to eliminate...

Found -- the apple gene for red

...ecular marker tests to speed up apple breeding and select for improved fruit colour. Dr Walker believes that this research could open the way to breeding new apple varieties. "With a better understanding of how apple colour is controlled we can begin to breed apples with new and interesting colour variati...

Female pronghorns choose mate based on substance as well as show

...ortant evolutionary force that does much more than select for ornaments in a few species," said John Byers of the University of Idaho. "It may be universally important in maintaining population genetic quality." In work supported by the National Science Foundation (NSF), Byers has shown that certain femal...

Study suggests evolutionary link between diet, brain size in orangutans

...gest that temporary, unavoidable food scarcity may select for a decrease in brain size, perhaps accompanied by only small or subtle decreases in body size," said Andrea Taylor and Carel van Schaik in a report now online in the Journal of Human Evolution. Taylor is an assistant professor at Duke's departme...

International team analyzes human genetic variation in key immune region

...ver time. The findings also suggest that analyzing select SNPs within the HLA genes may offer a more economical alternative for characterizing the most common genetic variants in the region than standard HLA typing methods. Nearly three-quarters of the DNA samples that the scientists analyzed had been pr...

Embryonic selection of sex avoids conceiving blind children

...ility of going blind. This is because, in order to select healthy embryos in a manner that does not involve sex selection, it would be essential to know the exact mutation in the chromosome, something which has not been achieved in this particular case. This embryonic selection enables the prevention of ...

Therapeutic role found for carbon monoxide

...he nitric oxide, the co-culture was treated with a select inhibitor of NOS3. Under these conditions, he adds, CO was unable to induce death to the same degree as in control-treated co-cultures. "We concluded that the physical interaction between the two cell types plus the ability to generate NO was crucia...

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