Top Sports PersonalitiesLance Armstrong was victorious in the Tour de France, while Serena Williams won four tournaments and blasted her way to a U.S. Open title.by Gerry Brown, John Gettings…
MicroevolutionMicroevolution and MacroevolutionIntroductionMicroevolutionSpeciationMacroevolution Microevolution is the change in the genome, or gene pool, for a given species in a relatively short…
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…
GOODWYN, Albert Taylor, a Representative from Alabama; born at Robinson Springs, Montgomery County, Ala., December 17, 1842; attended Robinson Springs Academy and South Carolina College at…
(Encyclopedia) mutation, in biology, a sudden, random change in a gene, or unit of hereditary material, that can alter an inheritable characteristic. Most mutations are not beneficial, since any…
(Encyclopedia) Evans, Sir Martin John, British geneticist, Ph.D., University College London, 1969. After serving on the faculty at University College London (1966–78) and Cambridge (1978–99), he…
(Encyclopedia) Morgan, Thomas Hunt, 1866–1945, American zoologist, b. Lexington, Ky., Ph.D. Johns Hopkins, 1890. He was professor of experimental zoology at Columbia (1904–28) and from 1928 was…
(Encyclopedia) Smithies, Oliver, 1925–2017, American geneticist, b. Halifax, England, Ph.D., Oxford, 1951. Smithies was on the faculty at the Univ. of Toronto (1953–60) and Univ. of Wisconsin–Madison…
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…
