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Mutagen


In biology, a mutagen (Latin, literally origin of change) is an agent that changes the genetic information (usually DNA) of an organism and thus increases the number of mutations above the natural background level.

Mutagens are usually chemical compounds or radiation.

The Ames test is one method to determine how mutagenic an agent is.

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(Date:6/19/2013)... a scientific paper published in the journal Polar Biology, researchers ... study what may be a new type of killer whale ... pod of unusual-looking killer whales stranded on a New Zealand ... Wellington. Photographs were also taken but it was almost 50 ... a very small white eye-patch and bulbous forehead, was documented ...
(Date:6/19/2013)... Insulin is the most potent physiological anabolic ... storage and synthesis of lipids, protein and carbohydrates, ... circulatory system. It also plays a major role ... the glucose is metabolized and removed from the ... the precise molecular mechanisms by which insulin regulates ...
(Date:6/19/2013)... across the Midwest are expected to contribute to a ... "dead zone," according to a University of Michigan ecologist ... with one for the Chesapeake Bay. , The Gulf ... and Atmospheric Administration, calls for an oxygen-depleted, or hypoxic, ... would place it among the 10 largest on record. ...
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... Institute of Food and Agriculture (NIFA) has awarded a ... Virginia Tech, a $20 million Coordinated Agricultural Grant to ... forests. In making the announcement, Paul Winistorfer, dean ... "The five-year grant will study climate change mitigation and ...
... Franco-Israeli partnership, this innovative solar power technology introduces a ... dominant role in the world-wide effort to reduce greenhouse ... an efficient source of electricity. Yet several obstacles have ... of its actors are looking for a new approach ...
... the end of the 20th century, the rise in sea ... rest of the world due to atmospheric pressure, but since ... Mediterranean have regained pace and seem to be accelerating. This ... edition of the book Cambio Climtico en el Mediterrneo Espaol ...
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