WHAT IS GENETIC VARIATION? HOW CAN WE MANIPULATE GENES? GM FOODCLONESSTEM CELLSFIND OUT MOREGenetic engineering is the manipulation of genes of living things. Scientists can now insert genes from…
(Encyclopedia) biotechnology, the use of biological processes, as through the exploitation and manipulation of living organisms or biological systems, in the development or manufacture of a product…
(Encyclopedia) Dawkins, Richard (Clinton Richard Dawkins), 1941– British evolutionary biologist and ethologist, b. Kenya, Ph.D. Oxford, 1966. He was a research assistant under Nikolaas Tinbergen at…
(Encyclopedia) Rickey, Branch, 1881–1965, American baseball executive, b. Stockdale, Ohio. As manager or executive, he was with the St. Louis Browns (1913–15), the St. Louis Cardinals (1917–42), the…
The System of Checks and Balances
In 1787 leaders of the states gathered to write the Constitution-a set of principles that told how the new nation would be governed.
The leaders of the states…
The expressed powers of Congress are listed in the Constitution. Congress also has implied powers, which are based on the Constitution's right to make any laws that are "necessary and proper" to…
Meiosis and Sexual ReproductionInheritanceIntroductionGenes at Work: Mendel's BreakthroughMeiosis and Sexual ReproductionGametogenesis in Plants and AnimalsRegulation of Gene Expression in…
(Encyclopedia) Fire, Andrew Zachary, 1959–, American geneticist, b. Palo Alto, Calif., Ph.D. Massachusetts Institute of Technology, 1983. After a long association with the Carnegie Institution of…
(Encyclopedia) Capecchi, Mario Renato, 1937–, American geneticist, b. Verona, Italy, Ph.D. Harvard, 1967. On the faculty at Harvard from 1967 to 1973, Capecchi became a professor at the Univ. of Utah…
For thousands of years, farmers have improved their crops by crossbreeding plants that have good traits. They take pollen from one plant and add it to the flowers of another plant to produce a…
