How are phenotypic differences between sexes related to phenotypic variation within sexes?
...ependence so that, among traits, a more pronounced difference between male and female should be associated with a stronger response to variation in condition. Russell Bonduriansky (University of New South Wales in Sydney) tested this prediction using the giant stilt-legged fly Telostylinus angusticollis, whi...Fires fuel mercury emissions, University of Michigan study finds
...ount of mercury released. The type of tree makes a difference because evergreens take up more mercury from the atmosphere on their needles than do broad-leafed trees, leading to more mercury accumulation in the soil prior to the fire. Based on their analysis and estimates of the area of forest and shrub land ......g flumes to test the larvae's ability to smell the difference between water from the five reefs. Their genetic analyses showed that while some fish species do disperse, other species return to their home reef. One species in particular, the cardinal fish (Ostorinchus doederleini), showed significant genetic ...How trees manage water in arid environments
...ater every day the way people in Arizona do. The difference shows up in many ways. In Arizona, Brown said, if you drop a piece of ice on the kitchen floor and ignore it, in a few minutes it will be gone -- melted and then evaporated. In Indiana, if you drop a piece of ice on the floor and ignore it, the water...'PET/CT in Cancer Patient Management' examined in Journal of Nuclear Medicine Supplement
...er and thyroid cancer; and how PET/CT could make a difference in drug development and clinical management for patients.Articles include "Integrating PET and PET/CT into the Risk-Adapted Therapy of Lymphoma," Yvette L. Kasamon, oncology and medicine departments; Richard J. Jones, oncology department; and Rich......o account something that other measures of genetic difference do not the genes that are no longer there. The re...only reported 1.5 percent nucleotide-by-nucleotide difference between humans and chimps. But they do illustrate there isn't a single, standard estimate of variati...Epigenetic drugs, promising for breast cancer treatment
...t as gene mutations and gene deletions do. The big difference between these two alternative ways that tumour cells use to inactivate tumour suppressor genes is that, while the reversal of genetic alterations is technically almost unfeasible in clinical scenarios, the function of these epigenetically inactivated......dator song, demonstrating that they understood the difference between calls." The researchers also observed the singing behaviour of gibbons spending time away from their home group. They noted that during predator songs within the group setting, the absent individual responded with his own song, before reapp...Human-chimp difference may be bigger
...s into account something other measures of genetic difference do not -- the genes that aren't there. That isn'...only reported 1.5 percent nucleotide-by-nucleotide difference between humans and chimps is wrong, said IUB computational biologist Matthew Hahn, who led the resea...High levels of vitamin D in the body may decrease the risk of multiple sclerosis
...cases was 28.5 years old; there was no significant difference in the results between men and women. "The results of this study converge with a growing body of experimental evidence supporting the importance of vitamin D in regulating the immune system and suppressing autoimmune reactions, which are thought b...Plant biologist seeks molecular differences between rice and its mimic
... "We're looking for anything that exploits the difference between the crop and the weed and the way that the weed grows versus the way that the crop grows," he said. "That's the way to eradicate it."...Climate change has surprising effect on endangered naked carp
...r in lake-water than in river-water, and that this difference is almost complete within twelve hours after transfer," write the authors. "The magnitude of this response is remarkable." But they caution, "If the lake continues to dehydrate, these benefits may change to pathology."...Funding boost for QUT world-class banana research
...anana plants are disease-free, we can make a major difference to the health of the East African population." QUT scientists have been successfully researching methods to improve the nutrient content of the East African Highland Banana through genetically improved breeding programs for the past 18 months....Sniffers show that humans can track scents, and that two nostrils are better than one
...sented this to both nostrils, so that there was no difference between what the nostrils smelled. The four subjects were half as accurate at tracking smells under these conditions. Independent measurements showed that a human's two nostrils sample odors from distinct areas separated by approximately 1.5 inches...Nano design adjustment may help find, clear some water contaminants
...nal chemistry have turned up a barely two-angstrom difference that may lead to a new approach to locate and remove dangerous toxins such as perchlorate and nitrates from the environment. The research targets toxic groundwater contaminants that contain negatively charged ions known as anions (a-NI-ens), which ...Flu shot effective against drifted influenza, nasal spray vaccine less so
...don't completely understand." "It may be that the difference in effectiveness between the shot and the spray can be attributed to poorer protection against type B infections in participants given FluMist," Monto said, but that's not clear from this study. The live attenuated vaccine marketed as FluMist was ...New Year's resolution No. 1: Prevent cancer, use olive oil.
...fects of olive oil may account for the significant difference in cancer rates among Northern and Southern Europeans. The authors drew this conclusion based on the outcomes of volunteers from Denmark, Finland, Germany, Italy, and Spain, who consumed 25 milliliters (a little less than a quarter cup) of olive oil...Embryonic patterning makes the feathers fly
...p into complicated results. For a chicken, its the difference between having feathers arranged in spots or stripes. For biologists at the University of Southern California and mathematicians at Oxford University in the UK, its all a question of patterning. To understand patterning on the molecular and the s...Brain wave changes in adolescence signal reorganization of the brain
...rs of age and declines 25% by age 14. The gender difference observed in delta intensity among the 12-14 year old children suggests that girls, on average, begin adolescent brain maturation at least one year earlier than boys. However, once they begin this maturational process, it proceeds at the same rate in ...A chilling solution: Measuring below-ground carbon without destroying trees
...of carbon recently produced by photosynthesis. The difference is that once the chilling was stopped, the effect was rapidly reversed, while the physically girdled trees died. "This phloem-chilling method can be applied to the same trees at various times of the year and under a variety of environmental conditi...