Genitic Program and Genome Structure

Genitic Program and Genome Structure

         On Earth, there are billions of animal and plant species, which differ from each other by morphological and behavioral criteria. The information needed to establish these criteria is included in the genome, which is specific to each species. Within a species is generally observed variability between individuals due to a polymorphism in the genome. These individual differences are exploited, for example, forensic

Plate tectonics continental drift theory

Plate tectonics and continental drift theory

        Plate tectonics was born in 1968 in the form of a theory of the evolution of the Earth's surface as a whole, hence the name given to it often global tectonics. Based on geophysical approach, it has since been the subject of numerous checks that have made it a widely accepted theory, making obsolete all other theories orogenic, or at least reducing the explanation of partial processes (for example, the gravitational slip of cover tectonics).

New forms of matter physics

New forms of matter in physics

    The man has shaped stone, bone, wood, clay, metal and progressive ... But it was not until the twentieth century that creates new forms of matter, and to perform a function. Having understood the movement of electrons in germanium (or silicon), John Bardeen, Walter H. Brattain and William B. Schockley imettent developed in 1948 the transistor - small amplifier device - which

vienna circle begin philosophy of science

Vienna Circle Begining Philosophy of Science

       Called "Vienna Circle" (Wiener Kreis) a group of scientists and philosophers trained in Vienna from 1923 around Schlick, to develop a new philosophy of science with rigor, and excluding consideration metaphysics. Guiding themes of the original group were developed in collaboration with another organization founded in Berlin under the leadership of Reichenbach, and their development was the neo-positivism, or logical positivism. After the outbreak of the Vienna Circle in the years preceding World War II, most of its

Nanotechnology uses benefits challenges

Nanotechnology uses benefits and challenges

        Since the early 1990s, the term nanotechnology - created to describe technologies that can develop structured objects in the nanometer (10-9 m billionth of a meter) - invaded newspapers, books (including novels), television, and even the field of advertising and ethical debate. Beyond a fad certain, since this scale artifacts around us for a long time that we have not always aware, remarkable progress has been made in this area since the