The following sections of this BookRags Literature Study Guide is offprint from Gale's For Students Series: Presenting Analysis, Context, and Criticism on Commonly Studied Works: Introduction, Author Biography, Plot Summary, Characters, Themes, Style, Historical Context, Critical Overview, Criticism and Critical Essays, Media Adaptations, Topics for Further Study, Compare & Contrast, What Do I Read Next?, For Further Study, and Sources.
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The following sections, if they exist, are offprint from Beacham's Guide to Literature for Young Adults: "About the Author", "Overview", "Setting", "Literary Qualities", "Social Sensitivity", "Topics for Discussion", "Ideas for Reports and Papers". (c)1994-2005, by Walton Beacham.
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1926-1994
French geneticist who discovered the chromosomal abnormality linked to Down's syndrome. During the 1950s, while at the National Center for Scientific Research (CNRS) in Paris, Lejeune conducted research concerning genetic predisposition for Down's syndrome, a congenital form of mental retardation. In 1959 he discovered that normal children were born with 46 chromosomes, or 23 pairs of chromosomes, while children with Down's syndrome exhibited an extra chromosome, which made one of the pairs a triplet. Lejeune was appointed director of research at the CNRS in 1963, and professor of fundamental genetics at the Faculty of Medicine in Paris in 1964.