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.
His daughter is actress Sigourney Weaver . Personal life Weaver was born Sylvester Laflin Weaver, Jr. in Los Angeles, the son of Eleanor Isabel (nÃ©e Dixon) and Sylvester Laflin Weaver. He was of Scottish descent (possibly Clan MacFarlane ), as well as of Ulster-Scots and early New England ancestry.