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Tag: "length" at biology news

One species, many genomes

... together, these probes would have seven times the length of human genome," illustrates Weigel the extent of the project. The data were evaluated with several specially designed statistical methods, including a variant of machine learning. The result of this painstaking analysis: on average, every 180th D...

Research identifies protein that signals flowering in squash plants

... an obligate short-day flowering wild squash. The length of the day relative to night, or photoperiod, is a...species. Short day (SD) plants require a short day length (or more precisely, a long night) in order to flower. These are plants that flower as the days grow ...

Bigger horns equal better genes

...n competing for reproductive mates (7 to 12), horn length varies according to genetic diversity: the greater the diversity, the greater the length of the horns. The researchers believe the horn length discrepancies are evidence to support the...

Columbine flowers develop long nectar spurs in response to pollinators

In flowers called columbines, evolution of the length of nectar spurs--the long tubes leading to plants'...hey found that most of the columbines' nectar spur length evolution happened during shifts in pollinators from bumblebees to hummingbirds, and from hummingbir...

Definitive evidence found of a swimming dinosaur

...andstone, averages approximately 50 centimeters in length and 15 centimeters wide. The spacing between them suggests an underwater stride of 243-271 centimeters. According to co-author Loic Costeur, Laboratoire de Planétologie et Géodynamique de Nantes, Université de Nantes, France, the S-shaped prints ...

Researchers use MRI to predict recovery after spinal cord injury

...ression (MSCC), maximum canal compromise (MCC) and length of lesion (LOL). They also looked at other factors, including bleeding within the spine, swelling and soft tissue injury. The results showed that severity of MSCC, bleeding and cord swelling were key indicators of a poor prognosis after SCI. Conve...

How to look at dinosaur tracks

...on or wet season. For example, estimating foot length from tracks can be inaccurate without these considerations ?the more erosion that has occurred, the larger the apparent dimensions of the track. Applications of this apparently larger foot size derived from an undertrack may lead to calculations of h...

Researchers publish first marsupial genome sequence

... versus 23 pairs, respectively) but a longer total length (3.4 billion versus 3 billion bases, respectively). ...

Spreading viruses as we breathe

Keeping at arm's length won't protect you from catching an infectious dise... "The current belief is that if you are an arm's length away from someone you are protected from any viruses they might be carrying," she said. "When we ...

From the deep -- Researchers find new species of sea anemone

...s Anthosactis primarily due to the roughly uniform length of A. pearseae's tentacles ?a characteristic common to this group of about seven sea anemones. "We tend to differentiate Anthosactis species from other groups of sea anemones by a variety of traits, rather than any one unique attribute," Daly said...

Rare soft-shell turtle, nesting ground found in Cambodia

...tshell turtles can grow up to 2 meters (6 feet) in length and weigh more than 50 kilograms (110 pounds). Only a few records of the species exist for Laos, and it appears to have disappeared across much of its former range in Vietnam and Thailand. It is currently classified as Endangered on the IUCN Red ...

Study shows isolation of stem cells may lead to a treatment for hearing loss

...a violin or a whisper. These hair cells differ in length by minuscule amounts and are set in motion by specific frequencies of sound. We hear this sound because this motion induces the hair cell to release an electrical impulse which passes along the auditory nerve to the brain. If the sound is too loud,...

Researchers identify gene involved in dog size

... of canine morphology including, for instance, leg length and skull shape. Three high-resolution photos depicting the wide size range among dog breeds are available at: www.genome.gov/pressDisplay.cfm?photoID=20009 ; www.genome.gov/pressDisplay.cfm?photoID=20010 ; and www.genome.gov/pressDisplay.cfm?...

Metacognition: Faced with a test, rats can check their knowledge first

...e if the noise happened to be of more intermediate length (for example, 4.4 seconds). But prior to the time-discrimination test, rats were given a choice of whether to take the test at all by poking their nose into one of two apertures. If the rat opted out of the test, it received a small food reward; if i...

Tracking sperm whales and jumbo squid

...y ocean. An adult male can reach nearly 60 feet in length and weigh 57 tons. The sperm whale was immortalized by Herman Melville in his novel Moby-Dick. Heavily hunted for their oil during Melville’s time, the sperm whale population today ranges somewhere between 360,000 to 1 million. These giants have a...

Study calculates patient time costs associated with cancer care

...g the first 12 months after diagnosis, the average length of time for hospitalization was highest for patients with gastric and ovarian cancers (21.1 and 20.8 days) and shortest for patients with melanoma (2.2 days), prostate cancer (3.8 days) and breast cancer (4.0 days). Compared to similar people without...

Fitness has fallen since the days of Ancient Greece

... three tiers, the ship could remain a manoeuvrable length and weight. The trireme used in Dr Rossiter's research, Olympias, was built in the 1980s and was used to carry the Olympic flame to Piraeus, the port near Athens, at the start of the last Olympic Games. It is now housed in a museum in Piraeus....

Chemo combination improves survival in asbestos-related cancer

...ination with cisplatin significantly increases the length of survival, when compared with cisplatin alone," the researchers say. "Further research is needed into the optimum treatment regimen for pleural mesothelioma." The review appears in the current issue of The Cochrane Library, a publication of The ...

New study sheds light on 'dark states' in DNA

...ne millionth of a second -- an inconceivably short length of time. Light travels at 186,000 miles per second, but in twenty picoseconds it would only travel just under a quarter of an inch. Still, a picosecond is not so fast compared to the speed of some chemical reactions in living cells. In tests of sin...

Researchers discover gene crucial for nerve cell insulation

...lowing them to travel farther and faster along the length of the nerve cell. The researchers discovered how a defect in just one copy of the gene, known as early growth response gene 2 (EGR2) affects the normal copy of the gene as well as the functioning of other genes, resulting in peripheral neuropathy...

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