Share. By Regina Bailey. Definition: An allele is an alternative form of a gene (one member of a pair) that is located at a specific position on a specific chromosome. These DNA codings determine distinct traits that can be passed on from parents to offspring through sexual reproduction.
Sylvester Weaver (executive) topic Sylvester Laflin  Pat  Weaver Jr. (December 21, 1908 â March 15, 2002) was an American radio advertising executive, who became president of NBC between 1953 and 1955. He has been credited with reshaping commercial broadcasting 's format and philosophy as radio gave way to television as America's dominant home entertainment.
Patrick Burkey was been named executive producer of NBC Nightly News with Brian Williams. The news was widely reported yesterday when the news division announced that Bob Epstein, who led the broadcast for two and a half years, would head to the specials unit. Burkey, a longtime NBC News producer, has been overseeing the weekend editions of Nightly News and Today. Previously he worked as a senior producer on Nightly News. âPat Burkey has played a pivotal role at NBC News for years,â said NBC News president Steve Capus in a statement.