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Tag: "evolutionary" at medical news

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

...lest subunit of a gene—can affect the survival and evolutionary fitness of an organism in the wild. Because the mice differ not only in overall color, but in pigmentation pattern, the study also provides geneticists with a first step toward understanding how color patterns, such as zebra stripes and leopard spo...

Watchful Eyes Ensures Honesty

...ore pro-socially. Professor George Fieldman, an evolutionary psychologist fromChilterns University College, Buckinghamshire, said: "It would be interesting to know how one can apply these sorts of findings more generally in organizational structures and in society in general to maximize upon honorable and altr...

Does Weight of the Mother Determine the Sex of the Baby?

...whether to keep a male or a female one. "It's an evolutionary adaptation," he said. "In the wild, males compete with each other for a partner and the bigger male has a distinct advantage. "Female size is not as crucial. Therefore, any particular maternal characteristic that results in a larger offspring is li...

Brain Matures Emotionally with Age

...ative emotions in older people was likely to be an evolutionary trait....

Brain’s response distinct upon exposure to erotic image

...onse to erotic pictures suggests that, perhaps for evolutionary reasons, our brains are programmed to preferentially respond to erotic material. "Usually men subjectively rate erotic material much higher than women," he says. "So based on those data we would expect lower responses in women, but that was not the...

Differently Wired and Gay – Are They Children of a Lesser God

...terestingly, the animal kingdom offers a peek into evolutionary behavior, in the realm of seeking partners and companions. Scientific research conducted in about 1500 animal species, indicates that homosexual behavior is evident in nearly 400 of the species. Infact sociobiologists have found this to be very commo...

Wound Healing Accelerated By Mutation In Deafness Gene

...ion are not deaf, we felt that there might be some evolutionary advantage to it, so we decided to investigate how ...x26 deafness mutations have been selected over the evolutionary process due to their beneficial effects on wound healing." Contact: Mary Rice mary@mrcommunicatio...

Enhancing Infants Immune System

...in newborns' immune response patterns may serve an evolutionary purpose. Nature may suppress babies' production of inflammatory cytokines like TNF-alpha and IL-12 before birth because they can trigger preterm labor, while increasing production of adenosine and IL-6, which may have a protective effect on the pregn...

Unraveling the Secrets of MHC in Human Genome

... are thought to have been shaped by widely varying evolutionary forces. The procedure is described in the Proceedings of the National Academy of Sciences. This method is an efficient way to map genes in the MHC that are responsible for many human diseases, and might also be useful in studying other gene complex...

Sexy Images and Lingerie Challenge A Man’s Decision Making Skill

... fact men are distracted by sexual cues fits in to evolutionary experience. It's what they are expected to do. They are looking for opportunities to pass on their genes. If a man is being asked to choose between something being presented by an attractive woman and an ugly men, they might not be as dispassionate a...

Species Linking Fish And Land Animals Found

A new species that provides the missing evolutionary link between fish and the first animals that were ...led the researchers to study the mosaic pattern of evolutionary change in different parts of the skeleton as fish evolved into land animals. The high quality of the...

Scientists Explain Complex Darwinian Evolution

...ith the other parts--has been an unsolved issue in evolutionary biology. Advocates of Intelligent Design argue that such systems are "irreducibly complex" and thus incompatible with gradual evolution by natural selection. "Our work demonstrates a fundamental error in the current challenges to Darwinism," said Tho...

British Psychology Student To Do Research On Dogs' Barks

...listeners. Evolutionary theory suggests that the evolutionary history of humans and dogs is inextricably linked, and it may be that domestic dogs vocalise primarily for their human companions. "It would be interesting to test this theory, for example, by modifying the recordings then playing them back to huma...

The Little Known Facts of Junk DNA

...egy used for studying similar species. But from an evolutionary standpoint, the last common ancestor of human and zebrafish lived more than 300 million years ago. But the Hopkins researchers developed the new system, by which virtually any DNA sequence can be tested for its ability to turn on a marker gene in zeb...

Beauty in birds’ got to do a lot with Bird flu

... The host will therefore always be in an important evolutionary race against its diseases. Thus it seems that the female uses the forehead spot as a health indicator. When she chooses males with a large forehead spots, she takes not only the healthiest males but also the ones with the best immune defence against ...

Ape Humans? Alterations in Proteins Affects Genes.

...Life. This book looks at the biological sources of evolutionary change. ...

Vitamin E: good, bad or ugly???

...r the selection of the alpha-tocopherol confers an evolutionary benefit in animal cells while the study doesn't get into the possible effects on health, the researchers raise the point that there is still a great deal that isn't known about how antioxidants act in the body.” said Cornwell. The researchers conduc...

Vitamin D May Help In Fight Against Tuberculosis

... progressive ability has been achieved through the evolutionary process. It has been known from previous studies that mice effectively combat the tubercle bacillus by production of nitric oxide in macrophages, the so-called scavenger cells of the immune system. This mechanism is however poorly understood in human...

Mystery behind the evolution of the Human brain

...n providing the physiological conditions for man’s evolutionary brain expansion. These fat reservoirs are due to the result of their moms dining on shoreline delicacies like clams and catfish. The author said that his hypothesis the fittest early humans were those with the fattest infants was due to this reason. ...

Search For Bigfoot Creature To Be Delayed

...the newspaper the theory that Bigfoot could be the evolutionary 'missing link' between ape and man is not so far-fetched. Many experts consider the possibility of Bigfoot's existence unlikely. Research has shown that only large populations of animals can reproduce and sustain themselves as a species, said Assoc...

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