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Hace 1 día · James Dewey Watson (born April 6, 1928) is an American molecular biologist, geneticist, and zoologist.In 1953, he co-authored with Francis Crick the academic paper proposing the double helix structure of the DNA molecule.Watson, Crick and Maurice Wilkins were awarded the 1962 Nobel Prize in Physiology or Medicine "for their discoveries concerning the molecular structure of nucleic acids and ...
Hace 1 día · African-American English is a variety (dialect, ethnolect, and sociolect) of American English, commonly spoken by urban working-class and largely bi-dialectal middle-class African Americans. [287] African American English evolved during the antebellum period through interaction between speakers of 16th- and 17th-century English of Great Britain and Ireland and various West African languages.
