Tag: "dominant" at biology news
Children Become Gorillas In VR Zoo
...d. "So if an adolescent male gorillaapproaches the dominant
silverback male gorilla, the Zoo Atlantaresearchers could tell us the range and probabilities of thesilverback's actual responses." Zoo researchers are impressed with the final outcome, which wasn'teasy to achieve. Unlike monkeys, apes are not extre...
Researchers Find How Disease-resistant Plants Recognize Bacteria
... that disease resistance in plants requires both a dominant
resistance gene in the plant and a dominant
gene in the pathogen, scientists have struggled to determine if his "gene-for-gene" theory was corre...
Second Gene Responsible For Tuberous Sclerosis Complex Identified
...f certainneurons. TSC is inherited as an autosomal dominant
disorder, meaning that any person withTSC has a 50 percent chance of transmitting the defective gene to each of his orher children, who will then have TSC. Like another neurogenetic disorder calledneurofibromatosis, TSC has a high rate of sporadic m...
A New Biochemical Link Established Between Stress, Sex And Dominance
...extra muscles and the fully mature sex organs of a dominant
"territorial" male. Stress appears to prevent all but the dominant
males from achieving reproductive success. Fernald said that since many species have evolved dominan...
MGH-Led Team Finds Gene For Crippling Neurologic Disorder
...olumbia group confirmed that the gene mutation was dominant
-- requiring inheritance from only a single parent -- and disproved the previous theory that it was recessive and had to be inherited from both parents. One of the most immediate applications of this discovery will be theavailability of a simple, in...
Stress Lowers Sperm Count By Overwhelming Cells That Make Testosterone
...esponse to stress.He and his colleagues found that dominant
rats living in stressful conditions,which produce higher levels of testosterone, have higher levels of enzymeactivity that counter increased glucocorticoids and ensure that they remainfertile....
Virginia Tech Engineers Help Mother Nature Clean Up
...and the plant species.It is also probable that the dominant
mechanisms will vary fromsite to site, depending on site characteristics such as the depthto groundwater, moisture content of the soil, type of soil, organicmatter of the soil, and other local features." For regulatory bodies such as the Environme...
Wistar Scientist Invited To Speak On Regeneration At National Meeting Of American Association For The Advancement Of Science
... says Dr. Heber-Katz, "that repair of woundsbecame dominant
in mammals with the development of a complex immune system,which was there to protect against tumors. It is known that molecules expressedin regenerating tissue are also expressed in tumors and, for that matter, duringmammalian development. In fact...
MRI Scans Following Heart Attack Could Determine Future Health
...tudiesthat show us how MRI is likely to become the dominant
method for imaging theheart in the near future," says Elias A. Zerhouni, M.D., a co-author of thepaper. Zerhouni, professor and director of radiology at Hopkins, is a developerof the MRI techniques used in this study. The study was supporte...
Among Wrens, Moms Teach Daughters To Call, Dads Teach Sons, Study Reveals
...erritories, Price explained.Within each group, the dominant
male and female act as the principal breedingpair ...t help construct the nest and feed the young. When dominant
birds die, helperscompete to take their place as breeders. The UNC-CH student, a behavioral ...
As A 'Carbon Sponge,' Iron-Poor Coastal Waters Can't Always Do The Job,
...water, before using nitrate. Silicate is used by a dominant
group ofphytoplankton called diatoms to make a shell of silicon dioxide--the samecompound found in window glass and the gemstone, opal. When diatoms can't findenough iron, they consume more silicate and form more opal: two to three timesmore, compare...
Life In Antarctic Ice May Compare To Mars
...oled and ice would have become, asit is today, the dominant
form of water on Mars' surface. A search for fossilevidence of the most recent life on Mars' surface could be based on life withinice, they said. The process of life formation is still largely unknown and very complex,Giovannoni said. ...
Atmospheric Chemistry -- A Mysterious Isotope Effect In A Well-Known AtmosphericPollutant Discovered
...+ OH ( CO2 + H ismass independent. Therefore, this dominant
atmospheric CO removal reaction wasinvestigated in laboratory experiments, and the results unambiguously confirmedmass-independent fractionation: During CO oxidization by OH under variousconditions, the remaining CO portion gradually obtained an exce...
Social Stress Causes Dormant Herpes Virus To Resurface In Mice
... The herpes virus was most prevalent in the dominant
mice, who were involved in ...hy of the mice by placing a dominant
mouse in a new cage. Glaser said he was surprised with the findings. "Only o...
Clockwork Clues Determined
...span. Light had previously been thought to be the dominant
signal in every organism. These studies suggest t...that temperature rather than visible light was the dominant
cue for resetting the cellular timekeepers. The work is supported by the National Institutes of Heal...
Plant Doctors Find Genetic Solution For Papaya Growers
...unUp," and a hybrid between 55-1 and "Kapoho" (the dominant
papaya cultivar grown in Hawaii) named "UHRainbow," were dramatically successful in field trials. This success, followedby tremendous cooperation between government agencies and grower groups resultedin the first seeds being released to papaya growe...
Gene Therapy Animal Study Offers Hope For Some Neurodegenerative Diseases
... degeneration occurs in association with autosomal dominant
retinitispigmentosa, an untreatable condition of p...abnormal, or mutant, proteins, so-called autosomal dominant
diseases, saidLaVail. Most gene therapy approaches have focused on diseases that occur when the twoc...
Computer Simulation To Predict Forest Fires
...to their original size.) Large forest fires are dominant
when the forest is densely populated. This was demonstrated by the researchers when the computer grid was filled with trees: The fires spanned the grid. This is what happened in Yellowstone National Park in 1988. The scientists say that forest-fire...
Ribozymes To The Rescue: New UF Gene Therapy Shows Promise For Treatment Of Inherited Blindness
...ibozymes may be developed to fight other autosomal dominant
diseases, including Marfan syndrome, a genetic disorder of the connective tissue, and some forms of ALS, more commonly known as Lou Gehrig's disease. "As long as you can design a ribozyme that could block the expression of the mutant gene, th...
Monkeys Have Numerical Abilities, Two Columbia Psychologists Report
...sing a groupof predators or ordering the number of dominant
males in one's group." With further studies, the research team hopes to answer other questionson language and numerical abilities in non-human primates. Do monkeys, likehumans, immediately identify small numbers of objects without counting? ...
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