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Tag: "preference" at biology news

Psst! Coffee drinkers: Fruit flies have something to tell you about caffeine

...r bellies to see what they ate - blue indicating a preference for eating sugar, red indicating a preference for bitter caffeine, and purple indicating no preference. Flies missing the critical taste receptor...

Male chimpanzees prefer mating with old females

...rrent Biology. Theoretical explanations for the preference of human males for young females as mates include ...m pair bonding and menopause may contribute to the preference of human males for young females, also suggest that this characteristic may be an evolutionarily der...

Selecting life: Scientists find new way to search for origin of life

... as chirality, binding a left-handed amino acid in preference to one that is right handed. These are very significant results that are guiding my own research as well as many other investigators in the field." Once Hazen and coworkers have identified molecule/surface pairs of interest with the DNA microarray...

Designer babies - what would you do for a 'healthy' baby?

...ereas men do not ?men show a significantly greater preference than female parents for their children to inherit their own characteristics. Parents see different physical, social and intellectual characteristics as desirable depending on the sex of the child. Older women and childless women are significantly mor...

Two nerve cells in direct contact

...one cell, the H2 cell. This cell exhibits a strong preference for rotational flow fields such as that which aris...he reactions to ipsilateral movement stimuli. "The preference of the H2 cell for rotational stimuli is due to a non-linear coordination of the movement stimuli fr...

New study is first to link romantic relationships to genes

...complex) genotypes, rather than similar ones. This preference may help avoid inbreeding between partners, as well as strengthen the immune systems of their offspring through exposure to a wider variety of pathogens. The study investigated whether MHC similarity among romantically involved couples predicted ...

Human preference for other species could determine whether they survive

...rnation. Unlike some other types of animals, human preference for particular penguin species does not seem to be driven by a "cuteness" factor. The four books Stokes examined were published in the last decade and were aimed at the popular adult audience. He eliminated photographs from consideration when fac...

Drug treatment improves learning in mice with Down syndrome symptoms, Stanford/Packard study shows

...new object, untreated Down syndrome mice showed no preference for either object. In the maze test, mice were habituated to the long arm of a T-shaped maze and then allowed to explore. Wild-type mice tended to investigate first one, then the other arm of the maze, while untreated Down syndrome mice were less ...

Making mice with enhanced color vision

...ress this question, the researchers used a classic preference test; mice set before three light panels were 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 ...

Like salty food? Chances are you had low blood sodium when you were born

...s found between neonatal lowest serum sodium and a preference for salt per se. Rather, the preference was for the foods that contain it. gestational age and birthweight were not predictors of chi...

Changes in amino acids in the 1918 influenza virus cut transmission

...magglutinin needs to mutate and change its binding preference from alpha2-3 to alpha2-6 sialic acids. In t...ted with all three viruses, including the one with preference for binding to alpha2-3 sialic acids, experienced severe disease, with high levels of virus replicat...

Scripps research team sheds light on long-sought cold sensation gene

...eratures, mice without TRPM8 showed essentially no preference in the temperature range of 18 to 31°C, suggesting their ability to sense this range was completely disabled without the gene. Normal mice, on the other hand, found cold temperature unpleasant, reliably avoiding cold temperatures in favor of warmer a...

New research shows sharks use their noses and bodies to locate smells

...rks with their lateral lines intact demonstrated a preference for the odor plume over the seawater plume and, mo...r alone (the odor-oozing nozzle). Plume and target preference and search time were not significantly affected by light condition. In the light, lesioning the ...

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