News tagged with trait changes


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Search results for trait changes


Seeing how evolutionary mechanisms yield biological diversity

Biology / Evolution

created Dec 22, 2009 | popularity not rated yet | comments 0

An international team of scientists has discovered how changes in both gene expression and gene sequence led to the diversity of visual systems in African cichlid fish.


Foot binding and a biological approach to the study of Chinese culture

Other Sciences / Social Sciences

created Dec 21, 2009 | popularity 2.8 / 5 (4) | comments 0

(PhysOrg.com) -- Exaptation is a familiar concept to evolutionary biologists. It's the basic idea explaining that a trait can evolve because it starts serving a different function. Think of birds: at first, the most important ...


Compound found to safely counter deadly bird flu

Medicine & Health / Diseases

created Dec 21, 2009 | popularity 5 / 5 (3) | comments 2

The specter of a drug-resistant form of the deadly H5N1 avian influenza is a nightmare to keep public health officials awake at night.


How the daisy got its spots… and why

How the daisy got its spots... and why

Biology / Plants & Animals

created Dec 18, 2009 | popularity 4.5 / 5 (2) | comments 0

Dark spots on flower petals are common across many angiosperm plant families and occur on flowers such as some lilies, orchids, and daisies. Much research has been done on the physiological and behavioral ...


Foodborne Staph Toxin Pinpointed by New Assay

Foodborne Staph Toxin Pinpointed by New Assay

Biology / Cell & Microbiology

created Dec 15, 2009 | popularity not rated yet | comments 0

(PhysOrg.com) -- Most people need about two days to recover from being sickened by foods contaminated with what's known as staphylococcal enterotoxin A, or "SEA." Produced by Staphylococcus aureus bacteria, ...


Scientists suggest certain genes boost chances for distributing variety of traits, drive evolution

Medicine & Health / Genetics

created Dec 14, 2009 | popularity not rated yet | comments 0

Genes that don't themselves directly affect the inherited characteristics of an organism but leave them increasingly open to variation may be a significant driving force of evolution, say two Johns Hopkins scientists.


Article Traces History of Darwinian Medicine

Biology / Evolution

created Dec 10, 2009 | popularity not rated yet | comments 0

(PhysOrg.com) -- Despite being a founding principle of modern biology for 150 years, evolutionary theory has played a limited role in the field of medicine. Only in the last 20 years has Darwinian medicine emerged as a discipline ...


Researchers show 'trigger' to stem cell differentiation

Biology / Biotechnology

created Dec 10, 2009 | popularity 5 / 5 (2) | comments 0

A gene which is essential for stem cells' capabilities to become any cell type has been identified by researchers at the Hebrew University of Jerusalem and the University of California, San Francisco.


Precision breeding creates super potato

Precision breeding creates super potato

Biology / Biotechnology

created Dec 08, 2009 | popularity 5 / 5 (1) | comments 0

The skin is light brown, the meat luscious and yellow: from the outside alone, this new potato looks like any other. But on the inside, it is different. Its cells produce pure amylopectin, a starch used in ...


Personality predicts success in medical school, says new study

Medicine & Health / Psychology & Psychiatry

created Dec 03, 2009 | popularity 4.3 / 5 (3) | comments 0

Personality characteristics play a major role in determining who succeeds in medical school, according to new research published in the November issue of the Journal of Applied Psychology. The study, co-authored by Univer ...



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