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Scientists provide insight into how organisms adapt to changing environmental conditions and fluctuations

Forthcoming in Physiological and Biochemical Zoology, a fascinating new selection of papers collects leading experimental research in evolution and artificial selection, providing insight into how organisms adapt to changing environmental conditions and fluctuations.

30 May 2007

Smart mice miss out on Alzheimer's

Scientists in the U.S. have managed to breed mice which lack the enzyme thought to be the culprit in Alzheimer's disease.

28 May 2007

After primates evolved the ability to see red, they began to develop red and orange skin and hair

Humans, apes and Old World monkeys, such as macaques and leaf monkeys, all have trichromatic vision, which allows these primates to distinguish between blue, green and red colors.

28 May 2007

Genetic data overturns long-held theory of limb development

Long before animals with limbs (tetrapods) came onto the scene about 365 million years ago, fish already possessed the genes associated with helping to grow hands and feet (autopods) report University of Chicago researchers in Nature.

24 May 2007

Transplanting human gut bugs into mice helps understanding of metabolic system

Bugs found in the guts of humans, which play an important part in people's metabolic makeup, have been transplanted into mice to further understanding of the human and animal metabolic system, reveals a new study in the journal Molecular Systems Biology.

24 May 2007

Discovery of fungi that uses radioactivity as an energy source

Scientists have long assumed that fungi exist mainly to decompose matter into chemicals that other organisms can then use.

24 May 2007

Scientists evolve new proteins from scratch

Nature, through the trial and error of evolution, has discovered a vast diversity of life from what can only presumed to have been a primordial pool of building blocks.

24 May 2007

Peering into the body and visualizing its molecular secrets one step closer to reality

Peering into the body and visualizing its molecular secrets, once the stuff of science fiction, is one step closer to reality with a study from researchers at the Stanford University School of Medicine and the University of California, San Diego School of Medicine.

22 May 2007

MIT researchers uncover surprising difference in gene regulation in mouse and human liver cells

Scientists often study mice as a model for human biology and disease, because their basic biological processes are assumed to be essentially the same as those of humans.

22 May 2007

Biologist hopes mosquito can break viral chain

Most people do their best to avoid mosquitoes. But this summer Rollie Clem will play the wary host to his own homegrown swarm of Aedes aegypti, the yellow fever mosquito. He's made a room ready for them, and even a menu.

22 May 2007

In some species estrogen plays a key role in aggressiveness

Imagine if a naturally occurring chemical in your body could help make you feel more calm and relaxed ? but it would only work during the long days of summer.

22 May 2007

Artificially created bone tissue

As the nation ages, an estimated 44 million Americans, including at least half of those ages 50 and older, are at risk for osteoporosis, making their bones fragile and vulnerable to serious fractures.

22 May 2007

Drug eluting nanostructured coatings

Drug delivery systems have progressed from the teaspoon to time-release capsules to drug-eluting stents.

22 May 2007

Scientists develop method to track immune system enzyme in live animals

Scientists supported by the National Institute of Arthritis and Musculoskeletal and Skin Diseases (NIAMS) at the National Institutes of Health have created two mouse strains that will permit researchers to trace, in a live animal, the activity of an enzyme believed to play a crucial role both in the normal immune response as well as autoimmunity and B cell tumor development.

18 May 2007

Left-right wiring determined by neural communication in the embryonic worm

Most animals appear symmetrical at first glance, but we're full of internal lop-sidedness.

18 May 2007

First draft of the genome sequence of Aedes aegypti mosquito

Developing new strategies to prevent and control yellow fever and dengue fever has become more possible with the completion of the first draft of the genome sequence of Aedes aegypti mosquito by scientists led by Vishvanath Nene at The Institute for Genomic Research (TIGR) and David Severson at the University of Notre Dame.

18 May 2007

Scientists convert the sequence of proteins into music

UCLA molecular biologists have turned protein sequences into original compositions of classical music.

17 May 2007

Nutrition and heredity genetically linked

A challenging goal in biology is to understand how the principal cellular functions are integrated so that cells achieve viability and optimal fitness under a wide range of nutritional conditions.

17 May 2007

Important new gene-silencing mechanism

Genes provide the instructions used by the individual cells to produce the many different proteins that make up the body.

17 May 2007

Clearer view of synaptic plasticity

Scientists are keenly studying how neurons form synapses--the physical and chemical connections between neurons--and the "pruning" of neural circuits during development, not least because synaptic abnormalities may partially underlie many developmental and neurodegenerative diseases.

17 May 2007