coloration

Study Finds Molecular Link Between Obesity, Hypertension

...ts associated with it, that would be huge." MC4R, Marks explained, is one of five melanocortin receptors in the brain; these proteins regulate skin coloration and stress, among other things. But MC4R regulates body weight, "and it does that by altering both appetite and energetics of your body -- your basal ...

Genetic Mutation in Mice Suggests Extinct Mammoth Had Light and Dark Fur

...Coast subspecies, even though these Atlantic coast beach mice have similarly light colored coats. The results suggest that beach mice gain their light coloration through different genetic mechanisms. “There is apparently more than one way genetically to become a light-colored beach mouse,” says Hoekstra. ...

Studies On Hearing Loss Discovers New Causes

...The women developed essential tremor in their 20s, and the man in his 50s. All of the individuals had blue eyes without heterochromia (a difference in coloration in two structures which are normally alike in color.) Molecular genetic studies failed to link these patients with mutations known to be associat...

coloration in Medical Dictionary

Cyanosis

... Cyanosis is a blue coloration of the skin and mucous membranes due to the presence of > 5g/dl deoxygenated hemoglobin in blood vessels near the skin surface. More ab...

coloration in Biological News

Interaction of just 2 genes governs coloration patterns in mice

CAMBRIDGE, Mass. -- Biologists at Harvard University and the University of California, San Diego, have found that a simple interaction between just two genes determines the patterns of fur coloration that camouflage mice against their background, protecting them from many predators. The work, publ...

ASU research shows connection between testosterone, dietary antioxidants and bird coloration

Mom may have been right all along, especially when we were hormone-raging teenagers, eat your veggies and good things will happen. In a new physiological study of birds, a researcher at Arizona State University has found that carotenoids, the pigments that color carrots orange and corn yellow, ...

Venomous sea snakes play heads or tails with their predators

...n the dark bands on the rest of the body, highlighting the similarity between the head and the tail. The reason for this mixture of behaviour and coloration results from a developed defence strategy needed when the snake is probing for prey. Despite being extremely venomous sea snakes are susceptible to at...

Animal and plant communication at the ESA Annual Meeting

...ral color spectrum of redness into the plants' habitat. They found that red coloration didn't affect the number of ants the pitchers' primary prey that were cap...need to be tested and not simply assumed. "There's no evidence that the coloration in pitcher plants is of any adaptive value for capturing prey," he says. "...

American Chemical Society's Weekly PressPac -- April 22, 2009

...for many advanced applications, the scientists say. The scientists describe development of a unique photochromic material that shows instantaneous coloration upon exposure to ultraviolet light and its disappearance within tens of milliseconds when the light is turned off. The decoloration speed is thousands...

Feather color is more than skin deep

...t of their red, orange and yellow coloration. In particular, carotenoid-red coloration in birds has been shown to act as an ornament, signaling the nutritional an...n common crossbills (finches) in which adult males display carotenoid-based coloration on the throat, breast and rump. They were particularly interested in the an...

American carnivores evolved to avoid each other, new study suggests

...r of weasel species in this exposed group have facial or body coloring with an abrupt demarcation between white and dark. For skunks, this contrasting coloration almost surely warns predators of their noxious spray, Hunter explained, while with some weasel family members -- the notoriously aggressive badgers an...

Biologists solve mystery of black wolves

...of short-legged wolves like dachshunds or wild wolves that look like Dalmatians. The surprise of this study is that black wolves have their black coat coloration as a gift from dogs. The products of artificial selection had added substantially to the genetic legacy of a wild species." Scientists have thou...

Insect warning colors aid cancer and tropical disease drug discovery

...ity. The study showed that beetles and butterfly larvae with bright warning coloration were significantly more common on plants that contained compounds active ag... medicines. The study suggests that a quick screen for insects with warning coloration on tropical plants may increase the efficiency of the search for compounds ...

Iridescence workshop promotes nature's nanotechnology

...f iridescent structures in butterflies, cephalopod coloration and sexual signaling in peacocks. This workshop...er and an ASU doctoral student studying structural coloration in birds. The workshop will present opportuniti... about the function of evolution and production of coloration in all organisms. This gathering will be the fi...

coloration in Biological Definition

Barr body

... on the different chromosomes; in some regions of the body one allele will be active, and in other regions the other will. This is what results in the coloration pattern of female calico cats ; pigmentation genes on the X chromosome are activated in different patches of skin based on which chromosome is conden...

coloration in Biological Dictionary

Halobacteria

... absorbs green light and reflects red and blue light. ... Halobacteria in Owens Lake, California. Near the shore of the dry Owens Lake. The pink coloration is caused by halobacteria living in a thin layer of brine on ... Halobacteria . From Wikispecies. Jump to: navigation, search. Halobacteria sp...

Giemsa stain

..... The application of Giemsa technique to stain compressed diaphragm samples ... Since the Giemsa stain method offers similar contrasting coloration as H-E with ... STAINING MANUAL - MICROORGANISMS. Page: 1 of 2. GIEMSA - SHEEHAN'S ... Giemsa stain . 2.5 ml. Methanol, acetone free. 2.5 ml...