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Tag: "differ" at biology news

Researchers find that bumblebees' flower choice matters

...ity, Karron has demonstrated that adjacent flowers differ markedly in their mating patterns. "It's amazing w... was the first to demonstrate that mating patterns differ dramatically among individual flowers and the first to show that the presence of competing plant spe...

High dopamine transporter levels not correlated with ADHD

...ith attention, dopamine transporter levels did not differ between the two groups. In both groups, levels of dopamine transporters in the putamen were positively associated with scores of inattention on the self-report questionnaire: the higher the level of transporters, the higher the score of inattention...

Development of gene therapy

...t assessment, although in this respect it does not differ substantially from other therapeutic approaches. Gene therapy is defined as the introduction of genes into tissues or cells via gene transfer, with the purpose of deriving a therapeutic or preventative benefit from the function of these genes. Gene ...

Too mellow for our predatory world

...ions and with different predator-experiences would differ in terms of stress response and behaviour. To this end the researchers conducted so-called "harassment experiments". At first, they recorded the original flight initiation distance of "naïve" animals. The researchers then experimentally chased the a...

Particle size matters to bacteria ability to immobilize heavy metals

...nvestigation. Nanoparticles have properties that differ from larger chunks of the same material. Physicists and chemists have been trying to describe the changes in physical and chemical properties of nanoparticles for some time but little work has been done to describe the effect of nanoparticles on natu...

Does missing gene point to nocturnal existence for early mammals?

...yet clear how the functions of the two melanopsins differ but having different cone genes or 'opsins' allows vertebrates to detect different wavelengths of light and allows them to see colour. The Manchester team now hopes to find out whether the two melanopsin genes in non-mammals play similar or differ...

Replacing insulin is top-ranked breakthrough foreseen for health in developing world

...e research occurs today, health-related priorities differ greatly from those of developing countries, which therefore should develop their own expertise and capacity. "Though largely neglected by the field of regenerative medicine to date, we suggest that developing countries could potentially benefit from...

Longer-lived rodents have lower levels of thyroid hormone

...ers concluded. However, because T3, levels did not differ significantly among all the groups, further research in this area using larger sample sizes (numbers of rodents in each group) is needed, Pinto said. ...

Bones at the nanoscale

...rch aims at telling us how these design principles differ in bones with different mechanical function and how they may be affected by age and disease....

Nobel Laureate finds 'elegant' explanation for DNA transcribing enzyme's high fidelity

...or the correct RNA building blocks, molecules that differ by only one oxygen atom. In search of an explanation in the current study, the researchers screened hundreds of crystals to achieve higher data quality and resolution than ever before. “In the course of the work, we saw something that had never b...

Unique tomatoes tops in disease-fighting antioxidants

...mers. Isomers share the same chemical formula, yet differ in chemical structure. In the case of tomatoes, the different lycopene isomers play a part in determining the color of the fruit. Several years ago, Schwartz and his colleagues discovered the abundance of several of these isomers, called cis- lyco...

MIT's ocean model precisely mimics microbes' life cycles

...randomly generates the single-celled plants, which differ primarily in their size, and in their sensitivity to light, temperature and nutrient availability, then allows the ocean to self-select those most fit for survival in any particular area. What emerged after the model completed its 10-year virtual ...

Plants do not emit methane

...he detection limit that they did not statistically differ from zero. To our knowledge this is the first independent test which has been published since the controversy last year. Conscious of the fact that a small amount of plant material might only result in small amounts of methane, the researchers sam...

Killing the messenger RNA -- But which one?

...ersions of these microRNAs are being produced that differ from the unedited versions by only a single nucleotide change," says Kazuko Nishikura, Ph.D., a professor in the Gene Expression and Regulation Program at Wistar and senior author on the study. "These edited microRNAs are not encoded in the DNA, whic...

Do you hear what i see?

... packed fields in the monkeys?auditory cortex that differ by the frequency of sound they process. Scans recorded activity in the monkeys?brains while they watched a video, with and without sound, and listened separately to the accompanying sound. The researchers found that fields in the hindmost part of th...

Making mice with enhanced color vision

...re trained to touch the one panel that appeared to differ from the other two. A correct answer was rewarded with a drop of soy milk. To circumvent thorny issues related to the subjective nature of color perception -- everyone who has had a discussion as to whether the "green" they see is the same as the...

The origin of the brain lies in a worm

...e course of evolution, but their architectures can differ substantially between species. While vertebrates have a CNS in the shape of a spinal cord running along their backs, insects and annelid worms like the earthworm have a rope-ladder-like chain of nerve cell clusters on their belly side. Other inverteb...

Scientists discover stage at which an embryonic cell is fated to become a stem cell

... that cells of the mammalian embryo first start to differ from each other much earlier in development than previously supposed but also they give us a real clue on how to manipulate embryonic cells so that they will develop with the properties of the natural stem cells of the embryo." The study also fou...

Wired for sound: How the brain senses visual illusions

...gration between the different sensory cortices may differ between individuals, or even vary over time. "It suggests that there are consistent differences in the neural connectivity that are possibly shaped during one's development and through experience," she said. Next, the researchers plan to look at ...

Research finds music training 'tunes' human auditory system

...language. In tone languages, a single word can differ in meaning depending on pitch patterns called "tones." For example, the Mandarin word "mi" delivered in a level tone means "to squint," in a rising tone means "to bewilder," and in a dipping (falling then rising) tone means "rice." English, on the o...

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