Levitsky G A (2 results)

Pamphlet. Condition: very good clean pages. Prompt Shipment, shipped in Boxes, Tracking PROVIDEDOffprint. Zur Geschichte der fruchtbaren, intermediaren, konstanten Weizen-Roggenbastarde (1932) torn and chipped; Investigation on the morphology of chromosomes (1929) in Russian cyrillic and English "With authors compliments"; Karyo-and genotypical transformations in the process of evolution, Leningrad, 1926 in Russian cyrillic. Inscribed presentation copy signed by the author.G. Lewitsky, H. Shepeleva, and N. Titova Cytology of F1, F2 and F3 of X-Rayed Crepis Capillaris Wallr. Leningrad 1934 In Russian cyrillic and English Inscribed signed by G. Lewitsky; A Cytological Study of the Progeny of X-Rayed Crepis capillaris Wallr. 1940, Japan. On Regularities in Chromosome Transformations Induced by X-Rays, 1934; On The Genotype Control of Structural Chromosome Changes, 1937. Some splitting at spine, Karl Sax, R. R. Gates, and E. M. East ownership stamps on a few covers, else very good. Scarce group of offprints. "Levitsky seems to have been the first person to define the karyotype as the phenotypic appearance of the somatic chromosomes, in contrast to their genic contents" Wikipedia. Scarce. Soviet Science. Biology. Genetics. Karyotype. * Signed. Autograph. Signed inscribed presentation.…

Large 8vo, 25cm. Pp. 19-174, many figs. on 15 plates, 35 figs. in text, refs. Orig. printed wrs. Spine mended. - Russian text with full English translation. - Rare offprint of the paper containing the introduction of the term "karyotype": "The term karyotype was introduced by Levitsky. At that time, it was meant to describe nuclear morphology (as its Greek meaning explains). In 1931, Levitsky wrote 'Me personally, used the term karyotype to define the characteristics of the nuclei from one or a group of organisms.' As in plant nuclei chromosomes were easily visualized, the karyotyping or looking at nuclei became synonymous. Because of this, the term has taken on its current definition as describing the particular chromosome complement of an individual, as defined by the number and morphology of the chromosomes. Thus, the meaning of the word 'karyotype' has evolved and is time and context dependent. Karyotyping was the first genome-wide screening tool for chromosomal imbalances and in addition enables the identification of chromosomal translocations. [.]" (J.R. Vermeesch and A. Rauch, European Journal of Human Genetics (2006) 14.). …