16 original offprints or papers. Includes: SAGER & S. GRANICK. "Nutritional Control of Sexuality in Chlamydomonas Teinhardi." Offprint from: The Journal of General Physiology, vol. 37, 6, July 20.

No place:: Journal of General Physiology, 1954., 1954. 8vo. pp. 729-742. Printed wrappers. Ownership rubber stamp of Norman Horowitz. Fine. Ruth Sager (1918-1997), American geneticist, chiefly noted for recognizing the importance of nonchromosomal genes. While at the Rockefeller Institute, Sager began to question the traditional belief that all the genes governing heredity were to be found arranged linearly on the chromosomes of cell nuclei. In 1953 she discovered in the alga Chlamydomonas a second genetic-transmitting system: not located on the chromosomes (truncated) of the alga. This gene governs the cell's sensitivity to the antibiotic streptomycin. Her experiments showed that the many nonchromosomal genes in Chlamydomonas could be passed on by either partner in sexual reproduction, that they controlled a variety of hereditary characteristics, and that they replicated and remained active through successive generations. In the 1960s research inspired by her pioneering studies showed that chloroplasts and mitochondria in cells of organisms throughout the evolutionary chain contain genetic materials that apparently synthesize proteins and other substances and largely regulate their own development. WITH: SAGER. "Mendelian and Non-Mendelian Inheritance of Streptomycin Resistance in Chlamydomonas Reinhardi." Offprint from: Proceedings of the National Academy of Sciences, vol. 40, 5, May 1954. 8vo. pp. 356-363. Printed wrappers. Ownership rubber stamp of Norman Horowitz. Fine. WITH: SAGER. "Inheritance in the Green Alga Chlamydomonas Reinhardi." Offprint: Genetics, vol. 40, no. 4, July 1955. 8vo. pp. 476-489. Figs. Blue printed wrappers. Ownership rubber stamp of Norman Horowitz. Fine. WITH: SAGER. "The Architecture of the Chloroplast in Relation to Its Photosynthetic Activities." Offprint from: The Photochemical Apparatus its Structure and Function; Brookhaven Symposia in Biology, no. 11, 1958. 8vo. pp. 101-117. Illus. Gray printed wrappers. Fine. WITH: SAGER & Marko ZALOKAR. "Pigments and Photosynthesis in a Carotenoid-deficient Mutant of Chlamydomonas." Offprint from: Nature, vol. 182, July 12, 1958. Sm. 8vo. pp. 98-100. [i.e. 8 pp.] Self-wraps. WITH: SAGER. "Genetic Systems in Chlamydomonas." Offprint: Science, vol. 132, no. 3438, Nov. 18, 1960. 4to. pp. 1459-1465. WITH: SAGER. "Photosynthetic Pigments in Mutant Strains of Chlamydomonas." Offprint: Carnegie Institution of Washington Year Book 60, 1960-61. 8vo. pp. 374-376. Self-wraps. Full list available on request. (Inventory #: S7806)